View source for Biology:2019 in mammal paleontology

This article records new taxa of [[Biology:Fossil|fossil]] [[Biology:Mammal|mammal]]s of every kind are scheduled to be [[Biology:Binomial nomenclature|described]] during the year 2019, as well as other significant discoveries and events related to [[Biology:Paleontology|paleontology]] of mammals that are scheduled to occur in the year 2019.

==General research==
* A study on the origin of the mammalian [[Medicine:Middle ear|middle ear]] [[Medicine:Ossicles|ossicles]], as indicated by the anatomy of the jaw-otic complex in 43 [[Biology:Synapsid|synapsid]] taxa, is published by Navarro‐Díaz, Esteve‐Altava & Rasskin‐Gutman (2019).<ref>{{cite journal |author1=Aitor Navarro‐Díaz |author2=Borja Esteve‐Altava |author3=Diego Rasskin‐Gutman |year=2019 |title=Disconnecting bones within the jaw‐otic network modules underlies mammalian middle ear evolution |journal=Journal of Anatomy |volume=235 |issue=1 |pages=15–33 |doi=10.1111/joa.12992 |pmid=30977522 |pmc=6579944}}</ref>
* A study on the evolution of the morphological complexity of the mammalian vertebral column, as indicated by data from mammals and non-mammalian synapsids, is published by Jones, Angielczyk & Pierce (2019).<ref>{{Cite journal|author1=Katrina E. Jones |author2=Kenneth D. Angielczyk |author3=Stephanie E. Pierce |year=2019 |title=Stepwise shifts underlie evolutionary trends in morphological complexity of the mammalian vertebral column |journal=Nature Communications |volume=10 |issue=1 |pages=Article number 5071 |doi=10.1038/s41467-019-13026-3 |pmid=31699978 |pmc=6838112 |bibcode=2019NatCo..10.5071J }}</ref>
* A study on the ecological structure of [[Earth:Mesozoic|Mesozoic]] [[Biology:Mammaliaformes|mammaliaform]] communities is published by Chen, Strömberg & Wilson (2019).<ref>{{Cite journal|author1=Meng Chen |author2=Caroline A. E. Strömberg |author3=Gregory P. Wilson |year=2019 |title=Assembly of modern mammal community structure driven by Late Cretaceous dental evolution, rise of flowering plants, and dinosaur demise |journal=Proceedings of the National Academy of Sciences of the United States of America |volume=116 |issue=20 |pages=9931–9940 |doi=10.1073/pnas.1820863116 |pmid=31036651 |pmc=6525522 |doi-access=free }}</ref>
* A study on the diversification of functional [[Biology:Morphology|morphology]] of jaws in Mammaliaformes in general and [[Biology:Crown group|crown]]-[[Biology:Theria|theria]]ns in particular from the Early Jurassic to the end of the [[Earth:Eocene|Eocene]], focusing on changes occurring across the [[Earth:Cretaceous|Cretaceous]]-[[Earth:Paleogene|Paleogene]] boundary, is published by Benevento, Benson & Friedman (2019).<ref>{{Cite journal|author1=Gemma Louise Benevento |author2=Roger B. J. Benson |author3=Matt Friedman |year=2019 |title=Patterns of mammalian jaw ecomorphological disparity during the Mesozoic/Cenozoic transition |journal=Proceedings of the Royal Society B: Biological Sciences |volume=286 |issue=1902 |pages=Article ID 20190347 |doi=10.1098/rspb.2019.0347 |pmid=31039714 |pmc=6532522 }}</ref>
* A study on the evolution of foot posture in mammals, and on the effects of posture on body size evolution, is published by Kubo ''et al.'' (2019).<ref>{{Cite journal|author1=Tai Kubo |author2=Manabu Sakamoto |author3=Andrew Meade |author4=Chris Venditti |year=2019 |title=Transitions between foot postures are associated with elevated rates of body size evolution in mammals |journal=Proceedings of the National Academy of Sciences of the United States of America |volume=116 |issue=7 |pages=2618–2623 |doi=10.1073/pnas.1814329116 |pmid=30692262 |pmc=6377445 |doi-access=free }}</ref>
* A study on arrangements of [[Biology:Tarsus (skeleton)|tarsal]] bones in mammals, focusing on extinct South American ungulates, is published by Lorente (2019).<ref>{{cite journal |author=Malena Lorente |year=2019 |title=What are the most accurate categories for mammal tarsus arrangement? A review with attention to South American Notoungulata and Litopterna |journal=Journal of Anatomy |volume=235 |issue=6 |pages=1024–1035 |doi=10.1111/joa.13065 |pmid=31373392 |pmc=6875937 |pmc-embargo-date=December 1, 2021 }}</ref>
* A review of ecological diversifications of mammals throughout their evolutionary history is published by Grossnickle, Smith & Wilson (2019).<ref>{{Cite journal|author1=David M. Grossnickle |author2=Stephanie M. Smith |author3=Gregory P. Wilson |year=2019 |title=Untangling the multiple ecological radiations of early mammals |journal=Trends in Ecology & Evolution |volume=34 |issue=10 |pages=936–949 |doi=10.1016/j.tree.2019.05.008 |pmid=31229335 }}</ref>
* A study on the ancestral tribosphenic [[Biology:Theria|theria]]n chewing stroke, as conserved in the extant [[Biology:Gray short-tailed opossum|gray short-tailed opossum]], is published by Bhullar ''et al.'' (2019).<ref>{{Cite journal|author1=Bhart-Anjan S. Bhullar |author2=Armita R. Manafzadeh |author3=Juri A. Miyamae |author4=Eva A. Hoffman |author5=Elizabeth L. Brainerd |author6=Catherine Musinsky |author7=Alfred W. Crompton |year=2019 |title=Rolling of the jaw is essential for mammalian chewing and tribosphenic molar function |journal=Nature |volume=566 |issue=7745 |pages=528–532 |doi=10.1038/s41586-019-0940-x |pmid=30760927 |bibcode=2019Natur.566..528B |s2cid=61155882 }}</ref>
* A review of the [[Earth:Biogeography|biogeographic]] history of mammals and other terrestrial vertebrates from the Mesozoic of [[Earth:Gondwana|Gondwana]] is published by Krause ''et al.'' (2019).<ref>{{cite journal |author1=David W. Krause |author2=Joseph J.W. Sertich |author3=Patrick M. O'Connor |author4=Kristina Curry Rogers |author5=Raymond R. Rogers |year=2019 |title=The Mesozoic biogeographic history of Gondwanan terrestrial vertebrates: insights from Madagascar's fossil record |journal=Annual Review of Earth and Planetary Sciences |volume=47 |pages=519–553 |doi=10.1146/annurev-earth-053018-060051 |bibcode=2019AREPS..47..519K }}</ref>
* A protocol for reconstructing 3D models of skulls of extinct species of small mammals known only from fragmentary fossils is proposed by Moya-Costa, Cuenca-Bescós & Bauluz (2019), who present reconstructions of the skulls of fossil shrews ''Beremendia fissidens'' and ''[[Biology:Dolinasorex|Dolinasorex]] glyphodon''.<ref>{{cite journal |author1=Raquel Moya-Costa |author2=Gloria Cuenca-Bescós |author3=Blanca Bauluz |year=2019 |title=Protocol for the reconstruction of micromammals from fossils. Two case studies: The skulls of ''Beremendia fissidens'' and ''Dolinasorex glyphodon'' |journal=PLOS ONE |volume=14 |issue=3 |pages=e0213174 |doi=10.1371/journal.pone.0213174 |pmid=30893322 |pmc=6426217 |bibcode=2019PLoSO..1413174M |doi-access=free }}</ref>
* A study on the impact of uncertainty of stratigraphic age of fossils on studies estimating species divergence times which incorporate fossil taxa, based on data from the fossil record of North American mammals and from the dataset of extant and fossil cetaceans, is published by Barido-Sottani ''et al.'' (2019).<ref>{{Cite journal|author1=Joëlle Barido-Sottani |author2=Gabriel Aguirre-Fernández |author3=Melanie J. Hopkins |author4=Tanja Stadler |author5=Rachel Warnock |year=2019 |title=Ignoring stratigraphic age uncertainty leads to erroneous estimates of species divergence times under the fossilized birth–death process |journal=Proceedings of the Royal Society B: Biological Sciences |volume=286 |issue=1902 |pages=Article ID 20190685 |doi=10.1098/rspb.2019.0685 |pmid=31064306 |pmc=6532507 }}</ref>
* A study on the ecological spectrum of six sequential terrestrial mammal faunas of the North American Cenozoic, aiming to assess the potential influence of long-term climatic shifts on the ecomorphological composition of these faunas, is published by Figueirido ''et al.'' (2019).<ref>{{Cite journal|author1=Borja Figueirido |author2=Paul Palmqvist |author3=Juan A. Pérez-Claros |author4=Christine M. Janis |year=2019 |title=Sixty-six million years along the road of mammalian ecomorphological specialization |journal=Proceedings of the National Academy of Sciences of the United States of America |volume=116 |issue=26 |pages=12698–12703 |doi=10.1073/pnas.1821825116 |pmid=31182613 |pmc=6600985 |bibcode=2019PNAS..11612698F |doi-access=free }}</ref>
* A study comparing the utility of classic [[Morphometrics|morphometric]] indices and three-dimensional landmarks configuration to infer diet of carnivorous fossil mammals is published by Tarquini ''et al.'' (2019).<ref>{{Cite journal|author1=Sergio Daniel Tarquini |author2=Maria Amelia Chemisquy |author3=Sandrine Ladevèze |author4=Francisco Juan Prevosti |year=2019 |title=The scope of traditional and geometric morphometrics for inferences of diet in carnivorous fossil mammals |journal=Ameghiniana |volume=56 |issue=4 |pages=307–318 |doi=10.5710/AMGH.24.07.2019.3255 |s2cid=201189256 |url=https://hal-mnhn.archives-ouvertes.fr/mnhn-02400457 }}</ref>
* A review of the fossil record of terrestrial mammals from [[Earth:Antarctica|Antarctica]] is published by Gelfo ''et al.'' (2019).<ref>{{cite journal |author1=Javier N. Gelfo |author2=Francisco J. Goin |author3=Nicolás Bauzá |author4=Marcelo A. Reguero |year=2019 |title=The fossil record of Antarctic land mammals: commented review and hypotheses for future research |journal=Advances in Polar Science |volume=30 |issue=3 |pages=274–292 |doi=10.13679/j.advps.2019.0021 |url=http://www.aps-polar.org/paper/2019/30/03/A190814000002 }}</ref>
* A study on the [[Earth:Taphonomy|taphonomy]] and age of mammal fossils from the Gruta do Ioiô cave (Salitre Formation; Chapada Diamantina region, {{wipe|Brazil}}), and on the paleoecology of fossil mammals from this site, is published online by Eltink ''et al.'' (2019).<ref>{{Cite journal|author1=Estevan Eltink |author2=Mariela Castro |author3=Felipe Chinaglia Montefeltro |author4=Mario André Trindade Dantas |author5=Carolina Saldanha Scherer |author6=Paulo Victor de Oliveira |author7=Max Cardoso Langer |year=2019 |title=Mammalian fossils from Gruta do Ioiô cave and past of the Chapada Diamantina, northeastern Brazil, using taphonomy, radiocarbon dating and paleoecology |journal=Journal of South American Earth Sciences |volume=98 |pages=Article 102379 |doi=10.1016/j.jsames.2019.102379 }}</ref>
* A study determining the sex of 186 [[Biology:Holarctic|Holarctic]] bison specimens known from [[Biology:Subfossil|subfossil]] remains, of 91 subfossil [[Biology:Brown bear|brown bear]] specimens and of mammal specimens from 4 large museum mammal collections representing multiple orders is published by Gower ''et al.'' (2019), who report a significant skew toward males among the studied specimens and search for possible explanations of the observed skew in sex ratio.<ref>{{Cite journal|author1=Graham Gower |author2=Lindsey E. Fenderson |author3=Alexander T. Salis |author4=Kristofer M. Helgen |author5=Ayla L. van Loenen |author6=Holly Heiniger |author7=Emilia Hofman-Kamińska |author8=Rafał Kowalczyk |author9=Kieren J. Mitchell |author10=Bastien Llamas |author11=Alan Cooper |year=2019 |title=Widespread male sex bias in mammal fossil and museum collections |journal=Proceedings of the National Academy of Sciences of the United States of America |volume=116 |issue=38 |pages=19019–19024 |doi=10.1073/pnas.1903275116 |pmid=31481609 |pmc=6754617 |doi-access=free }}</ref>
* A study determining the origins of nocturnal behavior in early mammals as correlating to sperm preservation.<ref>{{Cite journal |doi = 10.1086/705440|title = Obligatory Nocturnalism in Triassic Archaic Mammals: Preservation of Sperm Quality?|journal = Physiological and Biochemical Zoology|volume = 92|issue = 6|pages = 544–553|year = 2019|last1 = Lovegrove|first1 = Barry G.|pmid = 31560253|s2cid = 203569050}}</ref>

==Metatherians==
* Description of the anatomy of the postcranial skeleton of ''[[Biology:Argyrolagus|Argyrolagus]] scaglai'' from the Pliocene of {{wipe|Argentina}} is published online by Abello & Candela (2019), who interpret this species as having bipedal jumping locomotion.<ref>{{cite journal |author1=María Alejandra Abello |author2=Adriana Magdalena Candela |year=2019 |title=Paleobiology of ''Argyrolagus'' (Marsupialia, Argyrolagidae): an astonishing case of bipedalism among South American mammals |journal=Journal of Mammalian Evolution |volume=27 |issue=3 |pages=419–444 |doi=10.1007/s10914-019-09470-z |s2cid=174802743 }}</ref>
* Description of the anatomy of the caudal part of the cranium of ''[[Biology:Thylacosmilus|Thylacosmilus]] atrox'' is published by Forasiepi, Macphee & del Pino (2019).<ref>{{Cite journal|author1=Analía M. Forasiepi |author2=Ross D.E. Macphee |author3=Santiago Hernández del Pino |year=2019 |title=Caudal cranium of ''Thylacosmilus atrox'' (Mammalia, Metatheria, Sparassodonta), a South American predaceous sabertooth |journal=Bulletin of the American Museum of Natural History |volume=2019 |issue=433 |pages=1–66 |doi=10.1206/0003-0090.433.1.1 |hdl=2246/6943 |url=https://www.biodiversitylibrary.org/item/268304 }}</ref>
* Description of a nearly complete juvenile skull of ''Sparassocynus derivatus'' from the Pliocene Chapadmalal Formation ({{wipe|Argentina}}) and a study on the phylogenetic relationships of "sparassocynids" is published online by Beck & Taglioretti (2019).<ref>{{cite journal |author1=Robin M. D. Beck |author2=Matias L. Taglioretti |year=2019 |title=A nearly complete juvenile skull of the marsupial ''Sparassocynus derivatus'' from the Pliocene of Argentina, the affinities of "sparassocynids", and the diversification of opossums (Marsupialia; Didelphimorphia; Didelphidae) |journal=Journal of Mammalian Evolution |volume=27 |issue=3 |pages=385–417 |doi=10.1007/s10914-019-09471-y |s2cid=198190603 |doi-access=free }}</ref>
* A study on the locomotion of [[Biology:Balbaridae|balbarids]] is published by Den Boer, Campione & Kear (2019).<ref>{{cite journal |author1=Wendy Den Boer |author2=Nicolás E. Campione |author3=Benjamin P. Kear |year=2019 |title=Climbing adaptations, locomotory disparity and ecological convergence in ancient stem 'kangaroos' |journal=Royal Society Open Science |volume=6 |issue=2 |pages=Article ID 181617 |doi=10.1098/rsos.181617 |pmid=30891280 |pmc=6408368 |bibcode=2019RSOS....681617D }}</ref>
* A study on the phylogenetic relationships of a giant short-faced kangaroo ''[[Biology:Simosthenurus|Simosthenurus]] occidentalis'' and giant wallaby ''[[Biology:Protemnodon|Protemnodon]] anak'', as indicated by data from fossils and near-complete mitochondrial genomes, is published by Cascini ''et al.'' (2019).<ref>{{cite journal |author1=Manuela Cascini |author2=Kieren J. Mitchell |author3=Alan Cooper |author4=Matthew J. Phillips |year=2019 |title=Reconstructing the evolution of giant extinct kangaroos: comparing the utility of DNA, morphology, and total evidence |journal=Systematic Biology |volume=68 |issue=3 |pages=520–537 |doi=10.1093/sysbio/syy080 |pmid=30481358 |s2cid=53757324 }}</ref>
* A study on the skull morphology of ''Simosthenurus occidentalis'', and on its implications for inferring the diet of this mammal, is published by Mitchell & Wroe (2019).<ref>{{cite journal |author1=D. Rex Mitchell |author2=Stephen Wroe |year=2019 |title=Biting mechanics determines craniofacial morphology among extant diprotodont herbivores: dietary predictions for the giant extinct short-faced kangaroo, ''Simosthenurus occidentalis'' |journal=Paleobiology |volume=45 |issue=1 |pages= 167–181|doi=10.1017/pab.2018.46 |s2cid=196669141 }}</ref>
* A study on the skull of ''Simosthenurus occidentalis'', evaluating whether it was capable of consuming tough vegetation and withstanding twisting forces while biting resistant objects, is published by Mitchell (2019).<ref>{{cite journal |author=D. Rex Mitchell |year=2019 |title=The anatomy of a crushing bite: The specialised cranial mechanics of a giant extinct kangaroo |journal=PLOS ONE |volume=14 |issue=9 |pages=e0221287 |doi=10.1371/journal.pone.0221287 |pmid=31509570 |pmc=6738596 |bibcode=2019PLoSO..1421287M |doi-access=free }}</ref>
* The first descriptions of the [[Biology:Appendicular skeleton|appendicular skeleton]] and body mass estimates for three [[Biology:Palorchestidae|palorchestid]] species (''[[Biology:Palorchestes|Palorchestes]] azael'', ''Palorchestes parvus'' and a member of the genus ''[[Biology:Propalorchestes|Propalorchestes]]'' of uncertain specific assignment from the Bullock Creek Fossil Site) are presented by Richards ''et al.'' (2019).<ref>{{cite journal |author1=Hazel L. Richards |author2=Rod T. Wells |author3=Alistair R. Evans |author4=Erich M. G. Fitzgerald |author5=Justin W. Adams |year=2019 |title=The extraordinary osteology and functional morphology of the limbs in Palorchestidae, a family of strange extinct marsupial giants |journal=PLOS ONE |volume=14 |issue=9 |pages=e0221824 |doi=10.1371/journal.pone.0221824 |pmid=31518353 |pmc=6744111 |bibcode=2019PLoSO..1421824R |doi-access=free }}</ref>
* A study on fossils of a putative [[Earth:Cretaceous|Cretaceous]] [[Biology:Dicynodont|dicynodont]] from {{wipe|Australia}} reported by Thulborn & Turner (2003)<ref>{{cite journal|author1=Tony Thulborn |author2=Susan Turner |title=The last dicynodont: an Australian Cretaceous relict |journal=Proceedings of the Royal Society B: Biological Sciences |volume=270 |issue=1518 |year=2003 |pages=985–993 |doi=10.1098/rspb.2002.2296 |jstor=3558635 |pmid=12803915 |pmc=1691326}}</ref> is published online by Knutsen & Oerlemans (2019), who consider these fossils to be of Pliocene-[[Earth:Pleistocene|Pleistocene]] age, and reinterpret it as fossils of a large mammal, probably a [[Biology:Diprotodontidae|diprotodontid]].<ref>{{cite journal |author1=Espen M. Knutsen |author2=Emma Oerlemans |year=2019 |title=The last dicynodont? Re-assessing the taxonomic and temporal relationships of a contentious Australian fossil |journal=Gondwana Research |volume=77 |pages=184–203 |doi=10.1016/j.gr.2019.07.011 }}</ref>
* A study on the range and ecological tolerances of the Tasmanian devil living in the mainland Australia in prehistoric times, and on its implications for the viability of the proposal to reintroduce Tasmanian devils to mainland Australia, is published by Westaway ''et al.'' (2019).<ref>{{Cite journal|author1=Michael C. Westaway |author2=Gilbert Price |author3=Tony Miscamble |author4=Jane McDonald |author5=Jonathon Cramb |author6=Jeremy Ringma |author7=Rainer Grün |author8=Darryl Jones |author9=Mark Collard |year=2019 |title=A palaeontological perspective on the proposal to reintroduce Tasmanian devils to mainland Australia to suppress invasive predators |journal=Biological Conservation |volume=232 |pages=187–193 |doi=10.1016/j.biocon.2019.02.002 }}</ref>
* A study on the pre-Pleistocene evolutionary history of the family [[Biology:Thylacinidae|Thylacinidae]] is published by Rovinsky, Evans & Adams (2019).<ref>{{Cite journal|author1=Douglass S. Rovinsky |author2=Alistair R. Evans |author3=Justin W. Adams |year=2019 |title=The pre-Pleistocene fossil thylacinids (Dasyuromorphia: Thylacinidae) and the evolutionary context of the modern thylacine |journal=PeerJ |volume=7 |pages=e7457 |doi=10.7717/peerj.7457 |pmid=31534836 |pmc=6727838 }}</ref>
* An atlas of the skeletal elements of the [[Biology:Thylacine|thylacine]] is published by Warburton, Travouillon & Camens (2019).<ref>{{cite journal |author1=Natalie M. Warburton |author2=Kenny J. Travouillon |author3=Aaron B. Camens |year=2019 |title=Skeletal atlas of the Thylacine (''Thylacinus cynocephalus'') |journal=Palaeontologia Electronica |volume=22 |issue=2 |pages=Article number 22.2.29 |doi=10.26879/947 |doi-access=free }}</ref>

{| class="wikitable sortable" align="center" width="100%"
|-
! Name !! Novelty !! Status !! Authors !! Age !! Type locality !! Country !! Notes  !! Images
|-
| ''Apeirodon''<ref>{{cite journal |author1=María Judith Babot |author2=Guillermo W. Rougier |author3=Daniel García-Lopez |author4=Brian M. Davis |year=2020 |title=New small bunodont metatherian from the Late Eocene of the Argentinean Puna |journal=Journal of Mammalian Evolution |volume=27 |issue=3 |pages=373–384 |doi=10.1007/s10914-019-09468-7 |s2cid=170078262 }}</ref>
| Gen. et sp. nov
| Valid
| Babot ''et al.''
| [[Earth:Eocene|Eocene]] ([[Earth:Priabonian|Priabonian]])
| [[Earth:Geste Formation|Geste]]
| {{Flag|Argentina}}
| A small bunodont metatherian, possibly an early divergent member of [[Biology:Polydolopimorphia|Polydolopimorphia]]. Genus includes new species ''A. sorianoi''. Announced in 2019; the final version of the article naming it was published in 2020.
| 
|-
| ''Chaeropus yirratji''<ref>{{cite journal |author1=Kenny J. Travouillon |author2=Bruno F. Simões |author3=Roberto Portela Miguez |author4=Selina Brace |author5=Philippa Brewer |author6=David Stemmer |author7=Gilbert J. Price |author8=Jonathan Cramb |author9=Julien Louys |year=2019 |title=Hidden in plain sight: reassessment of the pig-footed bandicoot, ''Chaeropus ecaudatus'' (Peramelemorphia, Chaeropodidae), with a description of a new species from central australia, and use of the fossil record to trace its past distribution |journal=Zootaxa |volume=4566 |issue=1 |pages=zootaxa.4566.1.1 |doi=10.11646/zootaxa.4566.1.1 |pmid=31716448 }}</ref>
| Sp. nov
| Valid
| Travouillon ''et al.''
| [[Earth:Holocene|Holocene]]
| 
| {{Flag|Australia}}
| A relative of the [[Biology:Pig-footed bandicoot|pig-footed bandicoot]]
| 
|-
| ''Patene coloradensis''<ref>{{cite journal |author1=Caio César Rangel |author2=Leonardo Melo Carneiro |author3=Lilian Paglarelli Bergqvist |author4=Edison Vicente Oliveira |author5=Francisco Javier Goin |author6=María Judith Babot |year=2019 |title=Diversity, affinities and adaptations of the South American basal sparassodont ''Patene'' Simpson, 1935 (Mammalia, Metatheria) |journal=Ameghiniana |volume=56 |issue=4 |pages=263–289 |doi=10.5710/AMGH.06.05.2019.3222 }}</ref>
| Sp. nov
| Valid
| Rangel ''et al.''
| Middle Eocene
| Quebrada de Los Colorados
| {{Flag|Argentina}}
| A [[Biology:Sparassodonta|sparassodont]]
|
|-
| ''[[Biology:Unnuakomys|Unnuakomys]]''<ref>{{cite journal |author1=Jaelyn J. Eberle |author2=William A. Clemens |author3=Paul J. McCarthy |author4=Anthony R. Fiorillo |author5=Gregory M. Erickson |author6=Patrick S. Druckenmiller |year=2019 |title=Northernmost record of the Metatheria: a new Late Cretaceous pediomyid from the North Slope of Alaska |journal=Journal of Systematic Palaeontology |volume=17 |issue=21 |pages=1805–1824 |doi=10.1080/14772019.2018.1560369 |s2cid=92613824 }}</ref>
| Gen. et sp. nov
| Valid
| Eberle ''et al.''
| [[Earth:Late Cretaceous|Late Cretaceous]] ([[Earth:Maastrichtian|Maastrichtian]])
| Prince Creek
| {{Flag|United States}}<br />({{Flag|Alaska}})
| A member of the family Pediomyidae. Genus includes new species ''U. hutchisoni''.
|
|-
|}

==Eutherians==
* A study on the relationship between [[Biology:Morphology|morphological]] and molecular rates of evolution of [[Biology:Placentalia|placental]] mammals is published by Halliday ''et al.'' (2019), who interpret their findings as supporting a Late Cretaceous origin of [[Biology:Crown group|crown]] placentals, and indicating that early members of major placental groups may not be easily distinguishable from one another or from [[Biology:Crown group#Stem groups|stem]] [[Biology:Eutheria|eutheria]]ns.<ref>{{Cite journal|author1=Thomas J. D. Halliday |author2=Mario dos Reis |author3=Asif U. Tamuri |author4=Henry Ferguson-Gow |author5=Ziheng Yang |author6=Anjali Goswami |year=2019 |title=Rapid morphological evolution in placental mammals post-dates the origin of the crown group |journal=Proceedings of the Royal Society B: Biological Sciences |volume=286 |issue=1898 |pages=Article ID 20182418 |doi=10.1098/rspb.2018.2418 |pmid=30836875 |pmc=6458320 }}</ref>
* A study on the phylogenetic distribution, morphological variation and functions of apicobasal ridges (elevated ridges of [[Biology:Tooth enamel|tooth enamel]]) in aquatic mammals and reptiles, as indicated by data from extant and fossil taxa, is published by McCurry ''et al.'' (2019).<ref>{{Cite journal|author1=Matthew R. McCurry |author2=Alistair R. Evans |author3=Erich M. G. Fitzgerald |author4=Colin R. McHenry |author5=Joseph Bevitt |author6=Nicholas D. Pyenson |year=2019 |title=The repeated evolution of dental apicobasal ridges in aquatic-feeding mammals and reptiles |journal=Biological Journal of the Linnean Society |volume=127 |issue=2 |pages=245–259 |doi=10.1093/biolinnean/blz025 |doi-access=free }}</ref>
* New late [[Earth:Rupelian|Rupelian]] mammal fossils, including new specimens of the shrew ''Srinitium marteli'' and fossils of taxa formerly unknown in this locality, are described from the Aubenas-les-Alpes locality ({{wipe|France}}) by Maridet, Hugueney & Costeur (2019).<ref>{{Cite journal|author1=Olivier Maridet |author2=Marguerite Hugueney |author3=Loïc Costeur |year=2019 |title=Aubenas-les-Alpes (S-E France). Part III – Last and final part of the mammalian assemblage with some comments on the palaeoenvironment and palaeobiogeography |journal=Annales de Paléontologie |volume=105 |issue=2 |pages=139–153 |doi=10.1016/j.annpal.2019.03.001 |url=http://doc.rero.ch/record/327419/files/Cenogram-Aubenas.pdf }}</ref>
* A study on the brain size of extinct [[Biology:Insular dwarfism|insular dwarf]] species of hippos and elephants is published by Lyras (2019).<ref>{{Cite journal|author=George A. Lyras |year=2019 |title=Brain changes during phyletic dwarfing in elephants and hippos |journal=Brain, Behavior and Evolution |volume=92 |issue=3–4 |pages=167–181 |doi=10.1159/000497268 |pmid=30943507 |s2cid=93002129 |doi-access=free }}</ref>
* A study on the relative contributions of grass and grit as a driving force of evolutionary changes in teeth of North American [[Biology:Ungulate|ungulate]]s is published by Semprebon, Rivals & Janis (2019).<ref>{{Cite journal|author1=Gina M. Semprebon |author2=Florent Rivals |author3=Christine M. Janis |year=2019 |title=The role of grass vs. exogenous abrasives in the paleodietary patterns of North American ungulates |journal=Frontiers in Ecology and Evolution |volume=7 |pages=Article 65 |doi=10.3389/fevo.2019.00065 |s2cid=81979585 |doi-access=free }}</ref>
* A study on fossils of ''[[Biology:Micromeryx|Micromeryx]] flourensianus'' from a Miocene locality in {{wipe|France}}, preserving signs of carnivore activity, and on the possible identity of the predator which produced marks on these bones, is published by Aiglstorfer, Heizmann & Peigné (2019).<ref>{{Cite journal|author1=Manuela Aiglstorfer |author2=Elmar P.J. Heizmann |author3=Stéphane Peigné |year=2019 |title=Who killed ''Micromeryx flourensianus''? A case study of taphonomy and predation on ruminants in the middle Miocene of France |journal=Lethaia |volume=52 |issue=3 |pages=429–444 |doi=10.1111/let.12322 }}</ref>
* A study on changes in local climate and habitat conditions in central {{wipe|Spain}} in a period from 9.1 to 6.3 million years ago, and on the diet and ecology of large mammals from this area in this time period as indicated by [[Medicine:Tooth wear|tooth wear]] patterns, is published by De Miguel, Azanza &  Morales (2019).<ref>{{Cite journal|author1=Daniel De Miguel |author2=Beatriz Azanza |author3=Jorge Morales |year=2019 |title=Regional impacts of global climate change: a local humid phase in central Iberia in a late Miocene drying world |journal=Palaeontology |volume=62 |issue=1 |pages= 77–92|doi=10.1111/pala.12382 }}</ref>
* Miocene (Turolian) mammal faunas from several fossiliferous localities at Gorna Sushitsa (southwestern Bulgaria) are described by Spassov ''et al.'' (2019).<ref>{{Cite journal|author1=Nikolay Spassov |author2=Denis Geraads|author3=Latinka Hristova |author4=Georgi N. Markov |year=2019 |title=The late Miocene mammal fauna from Gorna Sushitsa, southwestern Bulgaria, and the early/middle Turolian transition |journal=Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen |volume=291 |issue=3 |pages=317–350 |doi=10.1127/njgpa/2019/0804 |url=https://hal.sorbonne-universite.fr/hal-02470749/file/Spassov%26al_GornaSushitsa.pdf}}</ref>
* New late Miocene vertebrate assemblage, including turtle, rodent and [[Biology:Xenarthra|xenarthra]]n fossils (among which is the oldest record of an [[Biology:Armadillo|armadillo]] belonging to the genus ''[[Biology:Dasypus|Dasypus]]'' reported so far), is described from the Los Alisos locality (Guanaco Formation, {{wipe|Argentina}}) by Ercoli ''et al.'' (2019).<ref>{{Cite journal|author1=Marcos D. Ercoli |author2=Alicia Álvarez |author3=Carla Santamans |author4=Sonia A. González Patagua |author5=Juan Pablo Villalba Ulberich |author6=Ornela E. Constantini |year=2019 |title=Los Alisos, a new fossiliferous locality for Guanaco Formation (late Miocene) in Jujuy (Argentina), and a first approach of its paleoecological and biochronology implications |journal=Journal of South American Earth Sciences |volume=93 |pages=203–213 |doi=10.1016/j.jsames.2019.04.024 |bibcode=2019JSAES..93..203E |hdl=11336/121466 |hdl-access=free }}</ref>
* A study on modern and fossil mammal herbivore communities from eastern Africa spanning the last ∼7 million years, aiming to determine whether modern herbivore communities are suitable analogs for the ancient ecosystems in which early hominins evolved, is published by Faith, Rowan & Du (2019).<ref>{{Cite journal|author1=J. Tyler Faith |author2=John Rowan |author3=Andrew Du |year=2019 |title=Early hominins evolved within non-analog ecosystems |journal=Proceedings of the National Academy of Sciences of the United States of America |volume=116 |issue=43 |pages=21478–21483 |doi=10.1073/pnas.1909284116 |pmid=31591246 |pmc=6815188 |bibcode=2019PNAS..11621478F |doi-access=free }}</ref><ref>{{Cite journal|author=Tom Weihmann |year=2020 |title=Species richness and composition are not sufficient for determining the functionality of ancient ecosystems |journal=Proceedings of the National Academy of Sciences of the United States of America |volume=117 |issue=7 |pages=3368–3369 |doi=10.1073/pnas.1920054117 |pmid=32019877 |pmc=7035617 |bibcode=2020PNAS..117.3368W }}</ref><ref>{{Cite journal|author1=J. Tyler Faith |author2=John Rowan |author3=Andrew Du |year=2020 |title=Reply to Weihmann: Fifty gazelles do not equal an elephant, and other ecological misunderstandings |journal=Proceedings of the National Academy of Sciences of the United States of America |volume=117 |issue=7 |pages=3370–3371 |doi=10.1073/pnas.1920565117 |pmid=32019886 |pmc=7035609 |bibcode=2020PNAS..117.3370F }}</ref>
* A study on the anatomical traits of teeth and inferred diet of [[Biology:Bovidae|bovids]], [[Biology:Suidae|suids]] and rhinocerotids from the Pliocene site of Kanapoi (Kenya), and on their implications for reconstructing the environments of this site, is published online by Dumouchel & Bobe (2019).<ref>{{Cite journal|author1=Laurence Dumouchel |author2=René Bobe |year=2019 |title=Paleoecological implications of dental mesowear and hypsodonty in fossil ungulates from Kanapoi |journal=Journal of Human Evolution |volume=140 |pages=Article 102548 |doi=10.1016/j.jhevol.2018.11.004 |pmid=30638945 }}</ref>
* A study on the mortality profiles of bovids from the [[History:Oldowan|Oldowan]] localities in Kanjera South (Kenya) and Olduvai Gorge (Tanzania), and on their implications for inferring hunting and scavenging behavior of early hominins in different (i.e. grassland and woodland) habitats, is published by Oliver ''et al.'' (2019).<ref>{{Cite journal|author1=James S. Oliver |author2=Thomas W. Plummer |author3=Fritz Hertel |author4=Laura C. Bishop |year=2019 |title=Bovid mortality patterns from Kanjera South, Homa Peninsula, Kenya and FLK-Zinj, Olduvai Gorge, Tanzania: Evidence for habitat mediated variability in Oldowan hominin hunting and scavenging behavior |journal=Journal of Human Evolution |volume=131 |pages=61–75 |doi=10.1016/j.jhevol.2019.03.009 |pmid=31182207 |url=http://researchonline.ljmu.ac.uk/id/eprint/10581/1/Oliver%20et%20al%202019_KanjeraVSZinj_BovidMortality_accepted_030819.pdf }}</ref>
* A study on spatial and temporal variation in species composition of ungulates from the Koobi Fora Formation throughout the Early Pleistocene is published online by O'Brien ''et al.'' (2019).<ref>{{Cite journal|author1=K. O'Brien |author2=D.B. Patterson |author3=M.D. Biernat |author4=D.R. Braun |author5=T.E. Cerling |author6=A. McGrosky |author7=J.T. Faith |year=2019 |title=Ungulate turnover in the Koobi Fora Formation: Spatial and temporal variation in the Early Pleistocene |journal=Journal of African Earth Sciences |volume=161 |pages=Article 103658 |doi=10.1016/j.jafrearsci.2019.103658 }}</ref>
* Results of stable carbon and oxygen isotope analyses of [[Biology:Tooth enamel|tooth enamel]] samples from [[Earth:Pleistocene|Pleistocene]] mammals from the Yugong Cave and Baxian Cave ({{wipe|China}}) are presented by Sun ''et al.'' (2019), who evaluate the implications of their findings for the knowledge of Pleistocene climatic and environmental changes in South China.<ref>{{Cite journal|author1=Fajun Sun |author2=Yang Wang |author3=Yuan Wang |author4=Chang-zhu Jin |author5=Tao Deng |author6=Burt Wolff |year=2019 |title=Paleoecology of Pleistocene mammals and paleoclimatic change in South China: Evidence from stable carbon and oxygen isotopes |journal=Palaeogeography, Palaeoclimatology, Palaeoecology |volume=524 |pages=1–12 |doi=10.1016/j.palaeo.2019.03.021 |bibcode=2019PPP...524....1S }}</ref>
* A study on the affinities and ages of Pleistocene mammalian faunas from China is published online by Dong, Liu & Bai (2019).<ref>{{cite journal |author1=Wei Dong |author2=Wen-Hui Liu |author3=Wei-Peng Bai |year=2019 |title=Cladistic approach on chronological relationship of the Pleistocene mammalian faunas from China |journal=Vertebrata PalAsiatica |volume=58 |issue=1 |pages=67–81 |doi=10.19615/j.cnki.1000-3118.190525 |url=http://www.ivpp.cas.cn/cbw/gjzdwxb/xbwzxz/201905/t20190524_5301752.html }}</ref>
* A study on Pleistocene mammal fossils from the Yai Ruak Cave (Krabi Province, Thailand), including the southernmost known record of ''[[Biology:Spotted hyena|Crocuta crocuta ultima]]'' in Southeast Asia, is published by Suraprasit ''et al.'' (2019), who evaluate the implications of these fossils for reconstructions of the environment in the area of the [[Biology:Malay Peninsula|Malay Peninsula]] in the Pleistocene.<ref>{{cite journal |author1=Kantapon Suraprasit |author2=Sutee Jongautchariyakul |author3=Chotima Yamee |author4=Cherdchan Pothichaiya |author5=Hervé Bocherens |year=2019 |title=New fossil and isotope evidence for the Pleistocene zoogeographic transition and hypothesized savanna corridor in peninsular Thailand |journal=Quaternary Science Reviews |volume=221 |pages=Article 105861 |doi=10.1016/j.quascirev.2019.105861 |bibcode=2019QSRv..22105861S }}</ref>
* A study on [[Earth:Paleolithic|Paleolithic]] faunal remains from the [[Biology:Manot Cave|Manot Cave]] ([[Place:Israel|Israel]]), comparing human and hyena prey choice in the [[Earth:Upper Paleolithic|Upper Paleolithic]] [[Religion:Galilee|Galilee]], is published online by Orbach & Yeshurun (2019).<ref>{{Cite journal|author1=Meir Orbach |author2=Reuven Yeshurun |year=2019 |title=The hunters or the hunters: Human and hyena prey choice divergence in the Late Pleistocene Levant |journal=Journal of Human Evolution |volume=in press |page= 102572|doi=10.1016/j.jhevol.2019.01.005 |pmid=30850235 }}</ref>
* A study on Pleistocene small mammal remains from Stratigraphic Unit V from El Salt site (Alcoy, Spain), evaluating their implications for the knowledge of climatic conditions in the eastern Iberian Peninsula at the time of the disappearance of local Neanderthal populations during [[Physics:Marine isotope stage|Marine Isotope Stage 3]], is published by Fagoaga ''et al.'' (2019).<ref>{{Cite journal|author1=Ana Fagoaga |author2=César Laplana |author3=Rafael Marquina-Blasco |author4=Jorge Machado |author5=M. Dolores Marin-Monfort |author6=Vicente D. Crespo |author7=Cristo M. Hernández |author8=Carolina Mallol |author9=Bertila Galván |author10=Francisco J. Ruiz-Sánchez |year=2019 |title=Palaeoecological context for the extinction of the Neanderthals: A small mammal study of Stratigraphic Unit V of the El Salt site, Alcoi, eastern Spain |journal=Palaeogeography, Palaeoclimatology, Palaeoecology |volume=530 |pages=163–175 |doi=10.1016/j.palaeo.2019.05.007 |bibcode=2019PPP...530..163F }}</ref>
* A study on the phylogenetic relationships of rodents and [[Biology:Lagomorpha|lagomorphs]], based on data from extant and fossil taxa, is published by Asher ''et al.'' (2019).<ref>{{cite journal |author1=Robert J. Asher |author2=Martin R. Smith |author3=Aime Rankin |author4=Robert J. Emry |year=2019 |title=Congruence, fossils and the evolutionary tree of rodents and lagomorphs |journal=Royal Society Open Science |volume=6 |issue=7 |pages=Article ID 190387 |doi=10.1098/rsos.190387 |pmid=31417738 |pmc=6689570 |bibcode=2019RSOS....690387A }}</ref>
* A study on [[Biology:Leporidae|leporid]] assemblages from 8 sites in southern {{wipe|France}} associated with [[Engineering:Acheulean|Acheulean]] and [[Earth:Middle Paleolithic|Middle Paleolithic]] occupations by hominins, aiming to examine small fast game exploitation by archaic ''[[Biology:Homo|Homo]]'' populations, is published by Morin ''et al.'' (2019).<ref>{{Cite journal|author1=E. Morin |author2=J. Meier |author3=K. El Guennouni |author4=A.-M. Moigne |author5=L. Lebreton |author6=L. Rusch |author7=P. Valensi |author8=J. Conolly |author9=D. Cochard |year=2019 |title=New evidence of broader diets for archaic ''Homo'' populations in the northwestern Mediterranean |journal=Science Advances |volume=5 |issue=3 |pages=eaav9106 |doi=10.1126/sciadv.aav9106 |pmid=30854435 |pmc=6402852 |bibcode=2019SciA....5.9106M }}</ref>
* A study on the taxonomic and skeletal identification and on surface modifications of mammals bones from the Fumane cave (Italy), evaluating their implications for the knowledge of subsistence behaviour of hominins inhabiting the cave across the Middle to [[Earth:Upper Paleolithic|Upper Paleolithic]] transition, is published by Sinet-Mathiot ''et al.'' (2019).<ref>{{cite journal |author1=Virginie Sinet-Mathiot |author2=Geoff M. Smith |author3=Matteo Romandini |author4=Arndt Wilcke |author5=Marco Peresani |author6=Jean-Jacques Hublin |author7=Frido Welker |year=2019 |title=Combining ZooMS and zooarchaeology to study Late Pleistocene hominin behaviour at Fumane (Italy) |journal=Scientific Reports |volume=9 |issue=1 |pages=Article number 12350 |doi=10.1038/s41598-019-48706-z |pmid=31451791 |pmc=6710433 |bibcode=2019NatSR...912350S }}</ref>
* A study on the dietary patterns and the ecological niches occupied by ungulates from the [[Biology:Mousterian|Mousterian]] of the Covalejos Cave (Cantabria, {{wipe|Spain}}), as inferred from analyses of teeth wear and dental [[Medicine:Cementum|cementum]], is published by Sánchez-Hernández ''et al.'' (2019), who evaluate the implications of their findings for the knowledge of the environmental conditions of this region, the knowledge of the age and season at the time of death these ungulates, and the knowledge of the seasonality and duration of Neanderthal occupations of the Covalejos Cave and the seasonality of their hunting activities.<ref>{{cite journal |author1=Carlos Sánchez-Hernández |author2=Lionel Gourichon |author3=Eric Pubert |author4=William Rendu |author5=Ramón Montes |author6=Florent Rivals |year=2019 |title=Combined dental wear and cementum analyses in ungulates reveal the seasonality of Neanderthal occupations in Covalejos Cave (Northern Iberia) |journal=Scientific Reports |volume=9 |issue=1 |pages=Article number 14335 |doi=10.1038/s41598-019-50719-7 |pmid=31586143 |pmc=6778078 |bibcode=2019NatSR...914335S }}</ref>
* A study on animal remains from the El Cierro cave (Asturias, {{wipe|Spain}}), evaluating how much energy [[Biology:Red deer|red deer]] supplied to the diet of the humans that inhabited El Cierro during the Lower Magdalenian in comparison with other animals, is published by Portero ''et al.'' (2019).<ref>{{cite journal |author1=Rodrigo Portero |author2=Marián Cueto |author3=Jesús F. Jordá Pardo |author4=Julián Bécares Pérez |author5=Esteban Álvarez-Fernández |year=2019 |title=The persistence of red deer (''Cervus elaphus'') in the human diet during the Lower Magdalenian in northern Spain: Insights from El Cierro cave (Asturias, Spain) |journal=Quaternary International |volume=506 |pages=35–45 |doi=10.1016/j.quaint.2019.01.016 |bibcode=2019QuInt.506...35P |hdl=10902/16204 }}</ref>
* A study on movement patterns of the [[Biology:Columbian mammoth|Columbian mammoth]]s and other herbivores from the Waco Mammoth National Monument site ({{wipe|Texas}}, {{wipe|United States}}), based on [[Chemistry:Strontium|strontium]] isotope data from their teeth, is published by Esker ''et al.'' (2019).<ref>{{Cite journal|author1=D. Esker |author2=S.L. Forman |author3=C. Widga |author4=J.D. Walker |author5=J.E. Andrew |year=2019 |title=Home range of the Columbian mammoths (''Mammuthus columbi'') and grazing herbivores from the Waco Mammoth National Monument, (Texas, USA) based on strontium isotope ratios from tooth enamel bioapatite |journal=Palaeogeography, Palaeoclimatology, Palaeoecology |volume=534 |pages=Article 109291 |doi=10.1016/j.palaeo.2019.109291 |bibcode=2019PPP...534j9291E }}</ref>
* Description of Pleistocene mammal fossils from Extinction Cave (Belize), including one of the southernmost record of the bison and one of two records of the bear species ''[[Biology:Tremarctos floridanus|Tremarctos floridanus]]'' from Central America, is published online by Churcher (2019).<ref>{{cite journal |author=C.S. Churcher |year=2019 |title=Pleistocene mammals from Extinction Cave, Belize |journal=Canadian Journal of Earth Sciences |volume=57 |issue=3 |pages=366–376 |doi=10.1139/cjes-2018-0178 }}</ref>
* A revision and a study on the age of the Late Pleistocene [[Biology:Megafauna|megafauna]] of Guatemala is published by Dávila ''et al.'' (2019).<ref>{{cite journal |author1=S. Lorena Dávila |author2=Sarah R. Stinnesbeck |author3=Silvia Gonzalez |author4=Susanne Lindauer |author5=Juan Escamilla |author6=Wolfgang Stinnesbeck |year=2019 |title=Guatemala's Late Pleistocene (Rancholabrean) fauna: Revision and interpretation |journal=Quaternary Science Reviews |volume=219 |pages=277–296 |doi=10.1016/j.quascirev.2019.07.011 |bibcode=2019QSRv..219..277D }}</ref>
* Evidence from the Campo Laborde site in {{wipe|Argentina}} indicating that humans hunted and butchered a giant [[Biology:Ground sloth|ground sloth]] ''[[Biology:Megatherium|Megatherium]] americanum'' is presented by Politis ''et al.'' (2019).<ref>{{Cite journal|author1=Gustavo G. Politis |author2=Pablo G. Messineo |author3=Thomas W. Stafford Jr |author4=Emily L. Lindsey |year=2019 |title=Campo Laborde: A Late Pleistocene giant ground sloth kill and butchering site in the Pampas |journal=Science Advances |volume=5 |issue=3 |pages=eaau4546 |doi=10.1126/sciadv.aau4546 |pmid=30854426 |pmc=6402857 |bibcode=2019SciA....5.4546P }}</ref>
* A study on diet and niche width of late Quaternary large herbivorous mammals from the Brazilian Intertropical Region is published by Pansani ''et al.'' (2019).<ref>{{cite journal |author1=Thaís Rabito Pansani |author2=Fellipe Pereira Muniz |author3=Alexander Cherkinsky |author4=Mírian Liza Alves Forancelli Pacheco |author5=Mário André Trindade Dantas |year=2019 |title=Isotopic paleoecology (δ<sup>13</sup>C, δ<sup>18</sup>O) of Late Quaternary megafauna from Mato Grosso do Sul and Bahia States, Brazil |journal=Quaternary Science Reviews |volume=221 |pages=Article 105864 |doi=10.1016/j.quascirev.2019.105864 |bibcode=2019QSRv..22105864P }}</ref>
* A study on late Pleistocene mammal fossils recovered from a tank deposit in Lagoa de Pedra (Anagé municipality, [[Place:Bahia|Bahia]] State, Brazil), aiming to determine the diet of these mammals and the paleoenvironment they lived in, is published by da Silva ''et al.'' (2019).<ref>{{cite journal |author1=Juliana de Almeida da Silva |author2=Luciano Artemio Leal |author3=Alexander Cherkinsky |author4=Mário André Trindade Dantas |year=2019 |title=Late Pleistocene meso-megamammals from Anagé, Bahia, Brazil: Taxonomy and isotopic paleoecology (''δ''<sup>13</sup>C) |journal=Journal of South American Earth Sciences |volume=96 |pages=Article 102362 |doi=10.1016/j.jsames.2019.102362 |bibcode=2019JSAES..9602362S }}</ref>
* A study on late Quaternary mammal remains from the Upper Gunnison Basin (Colorado, {{wipe|United States}}), focusing on their implications for the knowledge of [[Biology:Effects of climate change|impact of climate changes]] since the [[Earth:Last Glacial Maximum|Last Glacial Maximum]] on small mammals from this area, is published by Emslie & Meltzer (2019).<ref>{{Cite journal|author1=Steven D. Emslie |author2=David J. Meltzer |year=2019 |title=Late Quaternary vertebrates from the Upper Gunnison Basin, Colorado, and small-mammal community resilience to climate change since the last glacial maximum |journal=Quaternary Research |volume=92 |issue=2 |pages=388–407 |doi=10.1017/qua.2019.26 |bibcode=2019QuRes..92..388E |s2cid=198418756 }}</ref>
* A study on the ecology of mammals from the La Brea Tar Pits, focusing on the dietary responses of carnivorans to changing climate and megafaunal extinctions at the end of the Pleistocene, is published by DeSantis ''et al.'' (2019).<ref>{{Cite journal|author1=Larisa R.G. DeSantis |author2=Jonathan M. Crites |author3=Robert S. Feranec |author4=Kena Fox-Dobbs |author5=Aisling B. Farrell |author6=John M. Harris |author7=Gary T. Takeuchi |author8=Thure E. Cerling |year=2019 |title=Causes and consequences of Pleistocene megafaunal extinctions as revealed from Rancho La Brea mammals |journal=Current Biology |volume=29 |issue=15 |pages=2488–2495.e2 |doi=10.1016/j.cub.2019.06.059 |pmid=31386836 |s2cid=199469362 |doi-access=free }}</ref>
* A study on possible causes of the late Pleistocene extinctions, as indicated by the analysis of tooth wear and [[Biology:Tooth enamel|enamel]] [[Medicine:Hypoplasia|hypoplasia]] in late Pleistocene horses and bisons from North America, is published by Barrón-Ortiz ''et al.'' (2019).<ref>{{Cite journal|author1=Christina I. Barrón-Ortiz |author2=Christopher N. Jass |author3=Raúl Barrón-Corvera |author4=Jennifer Austen |author5=Jessica M. Theodor |s2cid=216592968 |year=2019 |title=Enamel hypoplasia and dental wear of North American late Pleistocene horses and bison: an assessment of nutritionally based extinction models |journal=Paleobiology |volume=45 |issue=3 |pages=484–515 |doi=10.1017/pab.2019.17 }}</ref>
* A study aiming to identify [[Biology:Community (ecology)|community]] assembly effects of the end-Pleistocene extinctions of large mammals in North America is published by Tóth ''et al.'' (2019).<ref>{{Cite journal|author1=Anikó B. Tóth |author2=S. Kathleen Lyons |author3=W. Andrew Barr |author4=Anna K. Behrensmeyer |author5=Jessica L. Blois |author6=René Bobe |author7=Matt Davis |author8=Andrew Du |author9=Jussi T. Eronen |author10=J. Tyler Faith |author11=Danielle Fraser |author12=Nicholas J. Gotelli |author13=Gary R. Graves |author14=Advait M. Jukar |author15=Joshua H. Miller |author16=Silvia Pineda-Munoz |author17=Laura C. Soul |author18=Amelia Villaseñor |author19=John Alroy |year=2019 |title=Reorganization of surviving mammal communities after the end-Pleistocene megafaunal extinction |journal=Science |volume=365 |issue=6459 |pages=1305–1308 |doi=10.1126/science.aaw1605 |pmid=31604240 |bibcode=2019Sci...365.1305T |s2cid=202699089 |url=https://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1750&context=bioscifacpub }}</ref>
* A study on the role of past climate, extinct [[Biology:Megafauna|megafauna]] and guanaco in shaping the vegetation of the Patagonian steppe is published by Hernández, Ríos & Perotto-Baldivieso (2019).<ref>{{cite journal |author1=Fidel Hernández |author2=Carlos Ríos |author3=Humberto L. Perotto-Baldivieso |year=2019 |title=Evolutionary history of herbivory in the Patagonian steppe: The role of climate, ancient megafauna, and guanaco |journal=Quaternary Science Reviews |volume=220 |pages=279–290 |doi=10.1016/j.quascirev.2019.07.014 |bibcode=2019QSRv..220..279H }}</ref>
* A study on the impact of climate change on the faunal composition and extinction dynamics of European mammal species during the Late Pleistocene-Holocene transition, aiming to test the hypothesis of the existence of common evolutionary processes of change in faunal composition during the Late Pleistocene and Holocene, independent of the regions of Europe, is published by Puzachenko & Markova (2019).<ref>{{Cite journal|author1=A.Yu. Puzachenko |author2=A.K. Markova |year=2019 |title=Evolution of mammal species composition and species richness during the Late Pleistocene - Holocene transition in Europe: A general view at the regional scale |journal=Quaternary International |volume=530–531 |pages=88–106 |doi=10.1016/j.quaint.2018.12.025 |bibcode=2019QuInt.530...88P }}</ref>
* A study on population density of large herbivores in Europe during the late Pleistocene and early Holocene, reconstructed on the basis of data from fossil dung fungus [[Biology:Spore|spore]]s from central Latvia, is published by Stivrins ''et al.'' (2019).<ref>{{Cite journal|author1=Normunds Stivrins |author2=Aija Cerina |author3=Mariusz Gałka |author4=Atko Heinsalu |author5=Lembi Lõugas |author6=Siim Veski |year=2019 |title=Large herbivore population and vegetation dynamics 14,600–8300 years ago in central Latvia, northeastern Europe |journal=Review of Palaeobotany and Palynology |volume=266 |pages=42–51 |doi=10.1016/j.revpalbo.2019.04.005 }}</ref>
* The discovery of ancient bear, roe deer and bat DNA recovered from stalagmites from the Solkota cave ([[Place:Georgia (country)|Georgia]]) is reported by Stahlschmidt ''et al.'' (2019).<ref>{{Cite journal|author1=M. C. Stahlschmidt |author2=T. C. Collin |author3=D. M. Fernandes |author4=G. Bar-Oz |author5=A. Belfer-Cohen |author6=Z. Gao |author7=N. Jakeli |author8=Z. Matskevich |author9=T. Meshveliani |author10=J. K. Pritchard |author11=F. McDermott |author12=R. Pinhasi |year=2019 |title=Ancient mammalian and plant DNA from late Quaternary stalagmite layers at Solkota cave, Georgia |journal=Scientific Reports |volume=9 |issue=1 |pages=Article number 6628 |doi=10.1038/s41598-019-43147-0 |pmid=31036834 |pmc=6488622 |bibcode=2019NatSR...9.6628S }}</ref>
* A study on evolutionary changes in body size and sexual size dimorphism associated with the independent colonization of {{wipe|Madagascar}} by primates, carnivorans, [[Biology:Tenrec|tenrec]]s and rodents is published by Kappeler ''et al.'' (2019).<ref>{{Cite journal|author1=Peter M. Kappeler |author2=Charles L. Nunn |author3=Alexander Q. Vining |author4=Steven M. Goodman |year=2019 |title=Evolutionary dynamics of sexual size dimorphism in non-volant mammals following their independent colonization of Madagascar |journal=Scientific Reports |volume=9 |issue=1 |pages=Article number 1454 |doi=10.1038/s41598-018-36246-x |pmid=30723219 |pmc=6363729 |bibcode=2019NatSR...9.1454K }}</ref>
* A study aiming to evaluate whether introduced deers and hares fill the same ecological niches as extinct [[Biology:Moa|moa]] birds in [[Earth:New Zealand|New Zealand]], as indicated by data from pollen extracted from moa coprolites and mammal feces, is published by Wood & Wilmshurst (2019).<ref>{{Cite journal|author1=Jamie R. Wood |author2=Janet M. Wilmshurst |year=2019 |title=Comparing the effects of asynchronous herbivores on New Zealand montane vegetation communities |journal=PLOS ONE |volume=14 |issue=4 |pages=e0214959 |doi=10.1371/journal.pone.0214959 |pmid=30947249 |pmc=6448933 |bibcode=2019PLoSO..1414959W |doi-access=free }}</ref>
* Description of small mammal fossils from the Pliocene site of Kanapoi (Kenya) is published online by Manthi & Winkler (2019).<ref>{{Cite journal|author1=Fredrick K. Manthi |author2=Alisa J. Winkler |year=2019 |title=Rodents and other terrestrial small mammals from Kanapoi, north-western Kenya |journal=Journal of Human Evolution |volume=140 |pages=Article 102694 |doi=10.1016/j.jhevol.2019.102694 |pmid=31759619 }}</ref>

===Xenarthrans===
* A study on the anatomy of the bone elements of the [[Biology:Hyoid apparatus|hyoid apparatus]] of xenarthrans, and on its implications for the knowledge of the phylogenetic relationships of xenarthrans, is published by Zamorano (2019).<ref>{{Cite journal|author=Martín Zamorano |year=2019 |title=Phylogenetic analysis of Xenarthra (Mammalia) based on bone elements of the hyoid apparatus: aspects on the monophyly of glyptodontids |journal=Revista Brasileira de Paleontologia |volume=22 |issue=1 |pages=53–66 |doi=10.4072/rbp.2019.1.05 |doi-access=free }}</ref>
* A study on the phylogeny, macroevolution, and historical biogeography of sloths is published by Varela ''et al.'' (2019).<ref>{{Cite journal|author1=Luciano Varela |author2=P. Sebastián Tambusso |author3=H. Gregory McDonald |author4=Richard A. Fariña |s2cid=52308176 |year=2019 |title=Phylogeny, macroevolutionary trends and historical biogeography of sloths: insights from a Bayesian morphological clock analysis |journal=Systematic Biology |volume=68 |issue=2 |pages=204–218 |doi=10.1093/sysbio/syy058 |pmid=30239971 }}</ref>
* A study on the phylogenetic relationships and evolutionary history of extinct and living sloths, as indicated by data from extinct sloth mitogenomes, is published by Delsuc ''et al.'' (2019).<ref>{{Cite journal|author1=Frédéric Delsuc |author2=Melanie Kuch |author3=Gillian C. Gibb |author4=Emil Karpinski |author5=Dirk Hackenberger |author6=Paul Szpak |author7=Jorge G. Martínez |author8=Jim I. Mead |author9=H. Gregory McDonald |author10=Ross D.E. MacPhee |author11=Guillaume Billet |author12=Lionel Hautier |author13=Hendrik N. Poinar |year=2019 |title=Ancient mitogenomes reveal the evolutionary history and biogeography of sloths |journal=Current Biology |volume=29 |issue=12 |pages=2031–2042.e6 |doi=10.1016/j.cub.2019.05.043 |pmid=31178321 |s2cid=177661447 |doi-access=free }}</ref>
* A study on the phylogenetic relationships of tree sloths and their extinct relatives, as indicated by collagen sequence information and mitochondrial DNA evidence, is published by Presslee ''et al.'' (2019).<ref>{{Cite journal|author1=Samantha Presslee |author2=Graham J. Slater |author3=François Pujos |author4=Analía M. Forasiepi |author5=Roman Fischer |author6=Kelly Molloy |author7=Meaghan Mackie |author8=Jesper V. Olsen |author9=Alejandro Kramarz |author10=Matías Taglioretti |author11=Fernando Scaglia |author12=Maximiliano Lezcano |author13=José Luis Lanata |author14=John Southon |author15=Robert Feranec |author16=Jonathan Bloch |author17=Adam Hajduk |author18=Fabiana M. Martin |author19=Rodolfo Salas Gismondi |author20=Marcelo Reguero |author21=Christian de Muizon |author22=Alex Greenwood |author23=Brian T. Chait |author24=Kirsty Penkman|author24-link= Kirsty Penkman |author25=Matthew Collins |author26=Ross D. E. MacPhee |year=2019 |title=Palaeoproteomics resolves sloth relationships |journal=Nature Ecology & Evolution |volume=3 |issue=7 |pages=1121–1130 |doi=10.1038/s41559-019-0909-z |pmid=31171860 |s2cid=174813630 |url=http://eprints.whiterose.ac.uk/147061/1/5426_3_merged_1554730549.pdf }}</ref>
* A study on the musculoskeletal diseases of Pleistocene sloths from the Brazilian Intertropical Region is published by Barbosa ''et al.'' (2019).<ref>{{Cite journal|author1=Fernando H. de S. Barbosa |author2=Kleberson de O. Porpino |author3=Hermínio I. de Araújo-Júnior |author4=Lilian P. Bergqvist |author5=Bruce M. Rothschild |year=2019 |title=Articular and vertebral lesions in the Pleistocene sloths (Xenarthra, Folivora) from the Brazilian Intertropical Region |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=5 |pages=544–558 |doi=10.1080/08912963.2017.1376191 |s2cid=89910254 }}</ref>
* A study comparing the [[Biology:Ungual|ungual]] [[Biology:Phalanx bone|phalanges]] of the third finger from the [[Biology:Manus (anatomy)|manus]] of Pleistocene ground sloths and a wide range of extant mammals, and aiming to determine possible life habits of Pleistocene ground sloths, is published online by Patiño, Zerpa & Fariña (2019).<ref>{{Cite journal|author1=Santiago Patiño |author2=Jorge Pérez Zerpa |author3=Richard A. Fariña |year=2019 |title=Finite element and morphological analysis in extant mammals' claws and quaternary sloths' ungual phalanges |journal=Historical Biology: An International Journal of Paleobiology |volume=33 |issue=6 |pages=857–867 |doi=10.1080/08912963.2019.1664504 |s2cid=203877218 }}</ref>
* A study on the phylogenetic relationships and evolutionary history of members of the family [[Biology:Mylodontidae|Mylodontidae]] is published by Boscaini, Pujos & Gaudin (2019).<ref>{{Cite journal|author1=Alberto Boscaini |author2=François Pujos |author3=Timothy J. Gaudin |year=2019 |title=A reappraisal of the phylogeny of Mylodontidae (Mammalia, Xenarthra) and the divergence of mylodontine and lestodontine sloths |journal=Zoologica Scripta |volume=48 |issue=6 |pages=691–710 |doi=10.1111/zsc.12376 |s2cid=201194980 }}</ref>
* New skull and teeth remains of ''Simomylodon uccasamamensis'' are described from the latest Miocene–Pliocene of the Bolivian Altiplano by Boscaini ''et al.'' (2019).<ref>{{Cite journal|author1=Alberto Boscaini |author2=Timothy J. Gaudin |author3=Bernardino Mamani Quispe |author4=Philippe Münch |author5=Pierre-Olivier Antoine |author6=François Pujos |year=2019 |title=New well-preserved craniodental remains of ''Simomylodon uccasamamensis'' (Xenarthra: Mylodontidae) from the Pliocene of the Bolivian Altiplano: phylogenetic, chronostratigraphic and palaeobiogeographical implications |journal=Zoological Journal of the Linnean Society |volume=185 |issue=2 |pages=459–486 |doi=10.1093/zoolinnean/zly075 |url=https://hal.umontpellier.fr/hal-01922935/file/Boscaini%20et%20al%202018%20ZJLS%20proof.pdf }}</ref>
* A study on the skeletal morphology of ''Simomylodon uccasamamensis'' is published by Boscaini ''et al.'' (2019), who report evidence indicative of [[Biology:Sexual dimorphism|sexual dimorphism]].<ref>{{Cite journal|author1=Alberto Boscaini |author2=Timothy J. Gaudin |author3=Néstor Toledo |author4=Bernardino Mamani Quispe |author5=Pierre-Olivier Antoine |author6=François Pujos |year=2019 |title=The earliest well-documented occurrence of sexual dimorphism in extinct sloths: evolutionary and palaeoecological insights |journal=Zoological Journal of the Linnean Society |volume=187 |issue=1 |pages=229–239 |doi=10.1093/zoolinnean/zlz011 }}</ref>
* New specimen of ''[[Biology:Lestodon|Lestodon]] armatus'', providing new information on the anatomy of this species, is described from a [[Earth:Quaternary|Quaternary]] deposit in Caçapava do Sul ({{wipe|Brazil}}) by Vargas-Peixoto ''et al.'' (2019).<ref>{{Cite journal|author1=Dilson Vargas-Peixoto |author2=Cícero Schneider Colusso |author3=Átila Augusto Stock Da-Rosa |author4=Leonardo Kerber |year=2019 |title=A new record of ''Lestodon armatus'' Gervais 1855 (Xenarthra, Mylodontidae) from the Quaternary of southern Brazil and remarks on its postcranial anatomy |journal=Historical Biology: An International Journal of Paleobiology |volume=33 |issue=2 |pages=159–175 |doi=10.1080/08912963.2019.1597075 |s2cid=132892318 }}</ref>
* New fossil remains of ''[[Biology:Proscelidodon|Proscelidodon]] rothi'' are described from the Pliocene El Polvorín Formation (Buenos Aires Province, {{wipe|Argentina}}) by Miño-Boilini ''et al.'' (2019).<ref>{{Cite journal|author1=Ángel R. Miño-Boilini |author2=Martín De Los Reyes |author3=Alfredo E. Zurita |author4=María J. Arrouy |author5=Daniel G. Poiré |year=2019 |title=Pliocene Scelidotheriinae (Xenarthra, Tardigrada) from the Pampean region of Argentina: Morphology, chronology, and comments on the diversity of the subfamily |journal=Comptes Rendus Palevol |volume=18 |issue=3 |pages=325–334 |doi=10.1016/j.crpv.2019.01.005 |doi-access=free }}</ref>
* Partial specimen of ''[[Biology:Megalonyx|Megalonyx]] jeffersonii'' is described from a peat deposit near Newburgh, Orange County by McDonald, Feranec & Miller (2019), representing the first record of this species from New York reported so far.<ref>{{Cite journal|author1=H. Gregory McDonald |author2=Robert S. Feranec |author3=Norton Miller |year=2019 |title=First record of the extinct ground sloth, ''Megalonyx jeffersonii'', (Xenarthra, Megalonychidae) from New York and contributions to its paleoecology |journal=Quaternary International |volume=530–531 |pages=42–46 |doi=10.1016/j.quaint.2018.11.021 |bibcode=2019QuInt.530...42M }}</ref>
* A study on sexual dimorphism and geographic variation of fossil [[Biology:Megalonychidae|megalonychid]] sloths from Hispaniola is published online by McAfee & Beery (2019).<ref>{{Cite journal|author1=Robert K. McAfee |author2=Sophia M. Beery |year=2019 |title=Intraspecific variation of Megalonychid sloths from Hispaniola and the taxonomic implications |journal=Historical Biology: An International Journal of Paleobiology |volume=33 |issue=3 |pages=371–386 |doi=10.1080/08912963.2019.1618294 |s2cid=195403443 }}</ref>
* New fossil specimens belonging to the genus ''[[Biology:Neocnus|Neocnus]]'', representing the easternmost record of this genus reported so far, are described from the Upper Pleistocene localities of Padre Nuestro and Oleg's Bat House (Dominican Republic) by McAfee & Rimoli (2019).<ref>{{Cite journal|author1=Robert K. McAfee |author2=Renato O. Rimoli |year=2019 |title=Easternmost occurrences of ''Neocnus'' (Mammalia, Pilosa, Megalonychidae) from the late Pleistocene–early Holocene of the Dominican Republic (Hispaniola) |journal=Journal of Vertebrate Paleontology |volume=39 |issue=3 |pages=e1624971 |doi=10.1080/02724634.2019.1624971 |s2cid=198238303 }}</ref>
* Description of a partial dentary with teeth and an [[Biology:Talus bone|astragalus]] of ''Megathericulus patagonicus'' from the Miocene [[Earth:Collón Curá Formation|Collón Curá Formation]] ({{wipe|Argentina}}) is published online by Brandoni, Ruiz & Bucher (2019), who consider the species ''Megathericulus primaevus'' to be a [[Biology:Synonym (taxonomy)|junior synonym]] of ''M. patagonicus''.<ref>{{Cite journal|author1=Diego Brandoni |author2=Laureano González Ruiz |author3=Joaquín Bucher |year=2019 |title=Evolutive implications of ''Megathericulus patagonicus'' (Xenarthra, Megatheriinae) from the Miocene of Patagonia Argentina |journal=Journal of Mammalian Evolution |volume=27 |issue=3 |pages=445–460 |doi=10.1007/s10914-019-09469-6 |s2cid=163164163 }}</ref>
* Description of new fossil material of ''[[Biology:Thalassocnus|Thalassocnus]]'' from the Mina Fosforita member of the [[Earth:Bahía Inglesa Formation|Bahía Inglesa Formation]] ({{wipe|Chile}}) and a study on the taxonomic diversity of members of the genus ''Thalassocnus'' in Chile is published by Peralta-Prato & Solórzano (2019).<ref>{{Cite journal|author1=Javiera Peralta-Prato |author2=Andrés Solórzano |year=2019 |title=How many species of the aquatic sloth ''Thalassocnus'' (Xenarthra: Megatheriidae) were in Chile?: new evidences from the Bahía Inglesa Formation, with a reappraisal of their biochronological affinities |journal=Andean Geology |volume=46 |issue=3 |pages=693–702 |doi=10.5027/andgeoV46n3-3221 |doi-access=free }}</ref>
* Description of new fossil material of ''[[Biology:Nothrotheriops|Nothrotheriops]]'' from the late Pleistocene of the Esperanza Lithostratigraphic Unit from the Salado Fluvial Accumulation Depression (Santa Fe Province, {{wipe|Argentina}}), and a study on the implications of this finding for the knowledge of the dispersal of ground sloths during the [[Earth:Great American Interchange|Great American Interchange]], is published by Brandoni & Vezzosi (2019).<ref>{{Cite journal|author1=Diego Brandoni |author2=Raúl I. Vezzosi |year=2019 |title=''Nothrotheriops'' sp. (Mammalia, Xenarthra) from the Late Pleistocene of Argentina: implications for the dispersion of ground sloths during the Great American Biotic Interchange |journal=Boreas |volume=48 |issue=4 |pages=879–890 |doi=10.1111/bor.12401 }}</ref>
* A study on the paleoecology of the first fossilized specimen of ''[[Biology:Eremotherium|Eremotherium]] laurillardi'' from Belize, as indicated by stable isotope analysis, is published by Larmon ''et al.'' (2019).<ref>{{Cite journal|author1=Jean T. Larmon |author2=H. Gregory McDonald |author3=Stanley Ambrose |author4=Larisa R. G. DeSantis |author5=Lisa J. Lucero |year=2019 |title=A year in the life of a giant ground sloth during the Last Glacial Maximum in Belize |journal=Science Advances |volume=5 |issue=2 |pages=eaau1200 |doi=10.1126/sciadv.aau1200 |pmid=30820449 |pmc=6392778 |bibcode=2019SciA....5.1200L }}</ref>
* Description of fossils of ''[[Biology:Megatherium|Megatherium]] americanum'' from the Pleistocene deposits of the Coastal Plain of the State of Rio Grande do Sul ({{wipe|Brazil}}) is published by Lopes & Pereira (2019).<ref>{{Cite journal|author1=Renato Pereira Lopes |author2=Jamil Corrêa Pereira |year=2019 |title=On the presence of ''Megatherium'' Cuvier, 1796 (Xenarthra, Pilosa) in fossiliferous deposits of the Coastal Plain of Southern Brazil |journal=Revista Brasileira de Paleontologia |volume=22 |issue=1 |pages=38–52 |doi=10.4072/rbp.2019.1.04 |doi-access=free }}</ref>
* A study on the morphology of the [[Biology:Scapula|scapula]]e of juvenile and adult specimens of ''[[Biology:Megalonyx|Megalonyx]] jeffersonii ''and ''[[Biology:Paramylodon|Paramylodon]] harlani'', and on its implications of the knowledge of the behavior of these sloths, is published by Grass (2019).<ref>{{Cite journal|author=Andy D. Grass |year=2019 |title=Inferring differential behavior between giant ground sloth adults and juveniles through scapula morphology |journal=Journal of Vertebrate Paleontology |volume=39 |issue=1 |pages=e1569018 |doi=10.1080/02724634.2019.1569018 |s2cid=132603649 }}</ref>
* A study on the microstructure of the [[Biology:Osteoderm|osteoderm]]s of ''[[Biology:Riostegotherium|Riostegotherium]] yanei'' is published by Bergqvist ''et al.'' (2019).<ref>{{cite journal |author1=Lílian P. Bergqvist |author2=Paulo Victor Luiz G.C. Pereira |author3=Alessandra S. Machado |author4=Mariela C. De Castro |author5=Luiza B. Melki |author6=Ricardo T. Lopes |year=2019 |title=Osteoderm microstructure of ''Riostegotherium yanei'', the oldest Xenarthra |journal=Anais da Academia Brasileira de Ciências |volume=91 |issue=Suppl. 2 |pages=e20181290 |doi=10.1590/0001-3765201920181290 |pmid=31482940 |doi-access=free }}</ref>
* A study on the evolution of morphological traits associated with tail weaponry in [[Biology:Glyptodont|glyptodont]]s and ankylosaur dinosaurs, aiming to quantitatively test the hypothesis that tail weaponry of these groups is an example of [[Biology:Convergent evolution|convergent evolution]], is published online by Arbour & Zanno (2019).<ref>{{cite journal |author1=Victoria M. Arbour |author2=Lindsay E. Zanno |year=2019 |title=Tail weaponry in ankylosaurs and glyptodonts: an example of a rare but strongly convergent phenotype |journal=The Anatomical Record |volume=303 |issue= 4|pages= 988–998|doi=10.1002/ar.24093 |pmid=30835954 |s2cid=73488683 }}</ref>
* New fossil material of the glyptodont ''[[Biology:Neuryurus|Neuryurus]]'', including associated remains of [[Biology:Carapace|carapace]] and [[Biology:Endoskeleton|endoskeletal]] bones, is described from the Pleistocene [[Earth:Sopas Formation|Sopas Formation]] (Uruguay) by Perea, Toriño & Ghizzoni (2019).<ref>{{Cite journal|author1=Daniel Perea |author2=Pablo Toriño |author3=Martín Ghizzoni |year=2019 |title=First endoskeletal remains of ''Neuryurus'' (Xenarthra, Glyptodontidae), an emended diagnosis of the genus, and body mass estimations |journal=Journal of Vertebrate Paleontology |volume=39 |issue=4 |pages=e1668400 |doi=10.1080/02724634.2019.1668400 |s2cid=208554276 }}</ref>
* A review of the late Pleistocene species of ''[[Biology:Glyptodon|Glyptodon]]'' from southern South America is published by Cuadrelli ''et al.'' (2019).<ref>{{Cite journal|author1=Francisco Cuadrelli |author2=Alfredo E. Zurita |author3=Pablo Toriño |author4=Ángel R. Miño-Boilini |author5=Santiago Rodríguez-Bualó |author6=Daniel Perea |author7=Gabriel E. Acuña Suárez |year=2019 |title=Late Pleistocene Glyptodontinae (Mammalia, Xenarthra, Glyptodontidae) from southern South America: a comprehensive review |journal=Journal of Vertebrate Paleontology |volume=38 |issue=5 |pages=e1525390 |doi=10.1080/02724634.2018.1525390 |s2cid=92335544 }}</ref>
* New specimen of ''Pucatherium parvum'' is described from the Eocene of the Lumbrera Formation ({{wipe|Argentina}}) by Herrera ''et al.'' (2019).<ref>{{Cite journal|author1=Claudia M. R. Herrera |author2=Graciela I. Esteban |author3=Martín R. Ciancio |author4=Cecilia Del Papa |year=2019 |title=New specimen of ''Pucatherium parvum'' (Xenarthra, Dasypodidae), a singular dasypodid of the Paleogene (Eocene) of northwest Argentina:importance in the early evolution of armadillos |journal=Journal of Vertebrate Paleontology |volume=39 |issue=4 |pages=e1670669 |doi=10.1080/02724634.2019.1670669 |s2cid=208565189 }}</ref>
* A study on the impact of climate changes on the distribution of [[Biology:Armadillo|armadillo]]s as indicated by fossil record is published by Soibelzon (2019).<ref>{{Cite journal|author=Esteban Soibelzon |year=2019 |title=Using paleoclimate and the fossil record to explain past and present distributions of armadillos (Xenarthra, Dasypodidae) |journal=Journal of Mammalian Evolution |volume=26 |issue=1 |pages= 61–70|doi=10.1007/s10914-017-9395-8 |hdl=11336/56634 |s2cid=24389494 }}</ref>
* A study on the internal structure of the [[Biology:Osteoderm|osteoderm]]s of extinct armadillos, and on its possible associations with the climate and environmental conditions of the distribution areas of various armadillo species, is published by Ciancio ''et al.'' (2019).<ref>{{Cite journal|author1=M. R. Ciancio |author2=C. M. Krmpotic |author3=A. C. Scarano |author4=M. B. Epele |year=2019 |title=Internal morphology of osteoderms of extinct armadillos and its relationship with environmental conditions |journal=Journal of Mammalian Evolution |volume=26 |issue=1 |pages=71–83 |doi=10.1007/s10914-017-9404-y |s2cid=39630502 |url=http://sedici.unlp.edu.ar/handle/10915/106942 }}</ref>

{| class="wikitable sortable" align="center" width="100%"
|-
! Name
! Novelty
! Status
! Authors
! Age
! Type locality
! Country
! Notes
! Images
|-
|
''[[Biology:Archaeomylodon|Archaeomylodon]]''<ref>{{cite journal |author1=Luciano Brambilla |author2=Damián Alberto Ibarra |year=2019 |title=''Archaeomylodon sampedrinensis'', gen. et sp. nov., a new mylodontine from the middle Pleistocene of Pampean Region, Argentina |journal=Journal of Vertebrate Paleontology |volume=38 |issue=6 |pages=e1542308 |doi=10.1080/02724634.2018.1542308 |s2cid=91874640 }}</ref>
|
Gen. et sp. nov
|
Valid
|
Brambilla & Ibarra
|
[[Earth:Ensenadan|Ensenadan]]
|
|
{{Flag|Argentina}}
|
A member of the family [[Biology:Mylodontidae|Mylodontidae]] belonging to the subfamily Mylodontinae. Genus includes new species ''A. sampedrinensis''.
|
|-
|
''[[Biology:Glossotherium|Glossotherium phoenesis]]''<ref>{{cite journal |author1=Cástor Cartelle |author2=Gerardo De Iuliis |author3=Alberto Boscaini |author4=François Pujos |year=2019 |title=Anatomy, possible sexual dimorphism, and phylogenetic affinities of a new mylodontine sloth from the late Pleistocene of intertropical Brazil |journal=Journal of Systematic Palaeontology |volume=17 |issue=23 |pages=1957–1988 |doi=10.1080/14772019.2019.1574406 |s2cid=132092534 }}</ref>
|
Sp. nov
|
Valid
|
Cartelle ''et al.''
|
Late [[Earth:Pleistocene|Pleistocene]]
|
|
{{Flag|Brazil}}
|
|
|-
|
''[[Biology:Holmesina|Holmesina cryptae]]''<ref>{{Cite journal|author1=Jorge Felipe Moura |author2=Flávio Góis |author3=Fernando Carlos Galliari |author4=Marcelo Adorna Fernandes |year=2019 |title=A new and most complete pampathere (Mammalia, Xenarthra, Cingulata) from the Quaternary of Bahia, Brazil |journal=Zootaxa |volume=4661 |issue=3 |pages=401–444 |doi=10.11646/zootaxa.4661.3.1 |pmid=31716695 }}</ref>
|
Sp. nov
|
Valid
|
Moura ''et al.''
|
Late [[Earth:Pleistocene|Pleistocene]] ([[Earth:Lujanian|Lujanian]])
|
|
{{Flag|Brazil}}
|
|
|-
|}

===Afrotherians===
* Description of the hindlimb bones of ''[[Biology:Sobrarbesiren|Sobrarbesiren]] cardieli'' is published online by Díaz-Berenguer ''et al.'' (2019).<ref>{{Cite journal|author1=Ester Díaz-Berenguer |author2=Alexandra Houssaye |author3=Ainara Badiola |author4=José Ignacio Canudo |year=2019 |title=The hind limbs of ''Sobrarbesiren cardieli'' (Eocene, northeastern Spain) and new insights into the locomotion capabilities of the quadrupedal sirenians |journal=Journal of Mammalian Evolution |volume=27 |issue=4 |pages=649–675 |doi=10.1007/s10914-019-09482-9 |s2cid=201838854 |url=https://hal.archives-ouvertes.fr/hal-02351001/document }}</ref>
* [[Biology:Dugongidae|Dugongid]] fossils are described from the [[Earth:Oligocene|Oligocene]] ([[Earth:Rupelian|Rupelian]]) Borysthenic Formation ({{wipe|Ukraine}}) by Gol'din, Kovalchuk & Krakhmalnaya (2019), representing the first known [[Biology:Sirenia|sirenia]]n record from inner seas of the [[Earth:Old World|Old World]] ([[Earth:Paratethys|Paratethys]]).<ref>{{Cite journal|author1=Pavel Gol'din |author2=Oleksandr M. Kovalchuk |author3=Tatiana Krakhmalnaya |year=2019 |title=The first record of Sirenia (Mammalia) from the early Oligocene of the Paratethys |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=10 |pages=1373–1378 |doi=10.1080/08912963.2018.1454444 |s2cid=90379258 }}</ref>
* Three dugongid specimens preserving the first [[Biology:Sirenia|sirenia]]n [[Biology:Endocast|endocranial casts]] from the [[Place:West Indies|West Indies]] reported so far are described from the upper Oligocene–lower Miocene Colón Formation (Cuba) by Orihuela, López & Macrini (2019).<ref>{{cite journal |author1=Johanset Orihuela |author2=Lázaro W. Viñola López |author3=Thomas E. Macrini |year=2019 |title=First cranial endocasts of early Miocene sirenians (Dugongidae) from the West Indies |journal=Journal of Vertebrate Paleontology |volume=39 |issue=2 |pages=e1584565 |doi=10.1080/02724634.2019.1584565 |s2cid=155655913 }}</ref>
* A study on the relationship between brain size and body mass in the evolutionary history of the [[Biology:Proboscidea|proboscidea]]ns is published by Benoit ''et al.'' (2019).<ref>{{Cite journal|author1=Julien Benoit |author2=Lucas J. Legendre |author3=Rodolphe Tabuce |author4=Theodor Obada |author5=Vladislav Mararescul |author6=Paul Manger |year=2019 |title=Brain evolution in Proboscidea (Mammalia, Afrotheria) across the Cenozoic |journal=Scientific Reports |volume=9 |issue=1 |pages=Article number 9323 |doi=10.1038/s41598-019-45888-4 |pmid=31249366 |pmc=6597534 |bibcode=2019NatSR...9.9323B }}</ref>
* New proboscidean remains from the late Miocene (Turolian) of Samos Island (Greece), representing juvenile individuals of [[Biology:Deinotheriidae|deinotheres]], [[Biology:Choerolophodontidae|choerolophodonts]] and [[Biology:Amebelodontidae|amebelodonts]], are described by Konidaris & Koufos (2019).<ref>{{cite journal |author1=George E. Konidaris |author2=George D. Koufos |year=2019 |title=Late Miocene proboscideans from Samos Island (Greece) revisited: new specimens from old collections |journal=PalZ |volume=93 |issue=1 |pages=115–134 |doi=10.1007/s12542-018-0432-6 |s2cid=133779567 |url=https://zenodo.org/record/3569486 }}</ref>
* Revision of proboscidean fossils from the Pliocene site of Kanapoi (Kenya) is published online by Sanders (2019).<ref>{{cite journal |author=William J. Sanders |year=2019 |title=Proboscidea from Kanapoi, Kenya |journal=Journal of Human Evolution |volume=140 |pages=Article 102547 |doi=10.1016/j.jhevol.2018.10.013 |pmid=30745193 }}</ref>
* A study comparing the diversity of elephantimorph proboscideans of northern and southern China during the late Miocene is published by Wang ''et al.'' (2019).<ref>{{cite journal |author1=Shi-Qi Wang |author2=Xue-Ping Ji |author3=Tao Deng |author4=Li-Ya Fu |author5=Jia-Hua Zhang |author6=Chun-Xiao Li |author7=Zi-Ling He |year=2019 |title=Yunnan, a refuge for trilophodont proboscideans during the late Miocene aridification of East Asia |journal=Palaeogeography, Palaeoclimatology, Palaeoecology |volume=515 |pages=162–171 |doi=10.1016/j.palaeo.2017.07.034 |bibcode=2019PPP...515..162W }}</ref>
* A study on the intestinal contents of two late-glacial [[Biology:Mastodon|mastodon]]s preserved in lake sediments in Ohio and Michigan (Burning Tree mastodon and Heisler mastodon), and on their implications for inferring diet and habitats of these specimens, is published by Birks ''et al.'' (2019).<ref>{{cite journal |author1=Hilary H. Birks |author2=Bas van Geel |author3=Daniel C. Fisher |author4=Eric C. Grimm |author5=Wim J. Kuijper |author6=Jan van Arkel |author7=Guido B.A. van Reenen |year=2019 |title=Evidence for the diet and habitat of two late Pleistocene mastodons from the Midwest, USA |journal=Quaternary Research |volume=91 |issue=2 |pages=792–812 |doi=10.1017/qua.2018.100 |bibcode=2019QuRes..91..792B |s2cid=133822213 }}</ref>
* A study on the diet of end-Pleistocene mastodons and mammoths from North America is published online by Cammidge, Kooyman & Theodor (2019).<ref>{{Cite journal|author1=Tasha Cammidge |author2=Brian Kooyman |author3=Jessica M. Theodor |year=2019 |title=Diet reconstructions for end-Pleistocene ''Mammut americanum'' and ''Mammuthus'' based on comparative analysis of mesowear, microwear, and dental calculus in modern ''Loxodonta africana'' |journal=Palaeogeography, Palaeoclimatology, Palaeoecology |volume=538 |pages=Article 109403 |doi=10.1016/j.palaeo.2019.109403 }}</ref>
* New fossil material of ''[[Biology:Choerolophodon|Choerolophodon]]'' from the early and middle Miocene of China is reported by Li ''et al.'' (2019).<ref>{{Cite journal|author1=Chunxiao Li |author2=Shi-Qi Wang |author3=Dimila Mothé |author4=Xijun Ni |year=2019 |title=New fossils of early and middle Miocene ''Choerolophodon'' from northern China reveal a Holarctic distribution of Choerolophodontidae |journal=Journal of Vertebrate Paleontology |volume=39 |issue=3 |pages=e1618864 |doi=10.1080/02724634.2019.1618864 |s2cid=196682903 }}</ref>
* A study on the diet of the American [[Biology:Gomphothere|gomphothere]]s, as indicated by stable isotope data from [[Biology:Tooth enamel|tooth enamel]] and [[Biology:Dentin|dentin]]e from tusks, is published online by Pérez-Crespo ''et al.'' (2019).<ref>{{Cite journal|author1=Víctor Adrián Pérez-Crespo |author2=José Luis Prado |author3=María Teresa Alberdi |author4=Joaquín Arroyo-Cabrales |author5=Eileen Johnson |year=2019 |title=Feeding ecology of the gomphotheres (Proboscidea, Gomphotheriidae) of America |journal=Quaternary Science Reviews |volume=229 |pages=Article 106126 |doi=10.1016/j.quascirev.2019.106126 }}</ref>
* Mothé, Ferretti & Avilla (2019) support the validity of ''[[Biology:Notiomastodon|Notiomastodon]]'' as a genus separate from ''[[Biology:Stegomastodon|Stegomastodon]]'', arguing that members of the genus ''Stegomastodon'' were absent from South America.<ref>{{cite journal |author1=Dimila Mothé |author2=Marco P. Ferretti |author3=Leonardo S. Avilla |year=2019 |title=Running Over the Same Old Ground: ''Stegomastodon'' Never Roamed South America |journal=Journal of Mammalian Evolution |volume=26 |issue=2 |pages=165–177 |doi=10.1007/s10914-017-9392-y |s2cid=23041930 }}</ref>
* Description of teeth of a member of the genus ''[[Biology:Anancus|Anancus]]'' from the Miocene (Turolian) locality Chomateri (Greece), constituting the first late Miocene record of this genus in Greece, and a revision of the late Miocene [[Biology:Anancidae|anancines]] from Europe, is published by Konidaris & Roussiakis (2019).<ref>{{cite journal |author1=George E. Konidaris |author2=Socrates J. Roussiakis |year=2019 |title=The first record of ''Anancus'' (Mammalia, Proboscidea) in the late Miocene of Greece and reappraisal of the primitive anancines from Europe |journal=Journal of Vertebrate Paleontology |volume=38 |issue=6 |pages=e1534118 |doi=10.1080/02724634.2018.1534118 |s2cid=91391249 |url=https://zenodo.org/record/3569754 }}</ref>
* A skull of a derived member of the genus ''[[Biology:Tetralophodon|Tetralophodon]]'' of uncertain specific assignment is described from the late Miocene of the Ouarzazate Basin (Morocco) by Geraads, Zouhri & Markov (2019).<ref>{{Cite journal|author1=Denis Geraads |author2=Samir Zouhri |author3=Georgi N. Markov |year=2019 |title=The first ''Tetralophodon'' (Mammalia, Proboscidea) cranium from Africa |journal=Journal of Vertebrate Paleontology |volume=39 |issue=3 |pages=e1632321 |doi=10.1080/02724634.2019.1632321 |s2cid=202024016 |url=https://hal.sorbonne-universite.fr/hal-02470714/file/Geraads%26al_J_Vert_Paleontol.pdf }}</ref>
* A study on the evolution of the genus ''[[Biology:Palaeoloxodon|Palaeoloxodon]]'', as indicated by data on skull morphology, is published online by Larramendi ''et al.'' (2019).<ref>{{Cite journal|author1=Asier Larramendi |author2=Hanwen Zhang |author3=Maria Rita Palombo |author4=Marco P. Ferretti |year=2019 |title=The evolution of ''Palaeoloxodon'' skull structure: Disentangling phylogenetic, sexually dimorphic, ontogenetic, and allometric morphological signals |journal=Quaternary Science Reviews |volume=229 |pages=Article 106090 |doi=10.1016/j.quascirev.2019.106090 }}</ref>
* A study on fossil molars of ''Elephas jolensis'' from the Pleistocene Kibish Formation (Kenya) and on the timing and causes of extinction of members of the genus ''[[Biology:Elephas|Elephas]]'' in Africa is published online by Manthi ''et al.'' (2019).<ref>{{cite journal |author1=Fredrick Kyalo Manthi |author2=William J. Sanders |author3=J. Michael Plavcan |author4=Thure E. Cerling |author5=Francis H. Brown |year=2019 |title=Late Middle Pleistocene elephants from Natodomeri, Kenya and the disappearance of ''Elephas'' (Proboscidea, Mammalia) in Africa |journal=Journal of Mammalian Evolution |volume=27 |issue=3 |pages=483–495 |doi=10.1007/s10914-019-09474-9 |s2cid=198190671 }}</ref>
* A mammoth skeleton, probably belonging to a member of the species ''[[Biology:Mammuthus rumanus|Mammuthus rumanus]]'', is described from the Erq el Ahmar Elephant Site (Central Jordan Valley part of the [[Earth:Dead Sea Transform|Dead Sea Transform]], [[Place:Israel|Israel]]) by Rabinovich ''et al.'' (2019), representing the first known skeleton of a member of this species from the southern Levant.<ref>{{cite journal |author1=Rivka Rabinovich |author2=Gadi Herzlinger |author3=Rani Calvo |author4=Florent Rivals |author5=Steffen Mischke |author6=Gali Beiner |year=2019 |title=Erq el Ahmar Elephant Site – A mammoth skeleton at a rare and controversial Plio-Pleistocene site along the mammal migration route out of Africa |journal=Quaternary Science Reviews |volume=221 |pages=Article 105885 |doi=10.1016/j.quascirev.2019.105885 |bibcode=2019QSRv..22105885R }}</ref>
* A study on the chemical composition, microstructure and mechanical properties of [[Biology:Tusk|tusk]] [[Biology:Dentin|dentin]]e from [[Biology:Woolly mammoth|woolly mammoth]] and from extant [[Biology:African elephant|African elephant]], and on its implications for inferring the utility of mammoth ivory as a raw material for Late Pleistocene osseous projectile points, is published by Pfeifer ''et al.'' (2019).<ref>{{cite journal |author1=Sebastian J. Pfeifer |author2=Wolfram L. Hartramph |author3=Ralf-Dietrich Kahlke |author4=Frank A. Müller |year=2019 |title=Mammoth ivory was the most suitable osseous raw material for the production of Late Pleistocene big game projectile points |journal=Scientific Reports |volume=9 |issue=1 |pages=Article number 2303 |doi=10.1038/s41598-019-38779-1 |pmid=30783179 |pmc=6381109 }}</ref>
* Stable carbon and nitrogen data of woolly mammoth fossils from north-eastern Siberia ranging throughout the last ∼50,000 years of the existence of this species is presented by Kuitems ''et al.'' (2019).<ref>{{cite journal |author1=M. Kuitems |author2=T. van Kolfschoten |author3=A.N. Tikhonov |author4=J. van der Plicht |year=2019 |title=Woolly mammoth δ<sup>13</sup>C and δ<sup>15</sup>N values remained amazingly stable throughout the last ∼50,000 years in north-eastern Siberia |journal=Quaternary International |volume=500 |pages=120–127 |doi=10.1016/j.quaint.2019.03.001 |bibcode=2019QuInt.500..120K |url=https://pure.rug.nl/ws/files/93872150/1_s2.0_S1040618218311613_main.pdf }}</ref>
* A study on the age and origin of the Berelyokh mammoth site in northeast Siberia published by Lozhkin & Anderson (2018)<ref>{{cite journal |author1=Anatoly V. Lozhkin |author2=Patricia M. Anderson |year=2018 |title=Another perspective on the age and origin of the Berelyokh mammoth site (northeast Siberia) |journal=Quaternary Research |volume=89 |issue=2 |pages=459–477 |doi=10.1017/qua.2018.3 |bibcode=2018QuRes..89..459L |s2cid=134501307 }}</ref> is criticized by Pitulko ''et al.'' (2019).<ref>{{cite journal |author1=Vladimir V. Pitulko |author2=Elena Y. Pavlova |author3=Aleksandr E. Basilyan |author4=Pavel A. Nikolskiy |year=2019 |title=Another perspective on the age and origin of the Berelyokh mammoth site—Comment to the paper published by Lozhkin and Anderson, Quaternary Research 89 (2018), 459–477 |journal=Quaternary Research |volume=91 |issue=2 |pages=910–913 |doi=10.1017/qua.2018.86 |bibcode=2019QuRes..91..910P |doi-access=free }}</ref><ref>{{cite journal |author1=Anatoly V. Lozhkin |author2=Patricia M. Anderson |year=2019 |title=Another perspective on the age and origin of the Berelyokh mammoth site: response to Pitulko et al. |journal=Quaternary Research |volume=91 |issue=2 |pages=914–915 |doi=10.1017/qua.2018.97 |bibcode=2019QuRes..91..914L |doi-access=free }}</ref>
* [[Biology:Cell nucleus|Nucleus]]-like structures are extracted from [[Biology:Yuka (mammoth)|Yuka]] mammoth specimen by Yamagata ''et al.'' (2019), who visualise their dynamics after transfer into living mouse [[Biology:Oocyte|oocyte]]s.<ref>{{cite journal |author1=Kazuo Yamagata |author2=Kouhei Nagai |author3=Hiroshi Miyamoto |author4=Masayuki Anzai |author5=Hiromi Kato |author6=Kei Miyamoto |author7=Satoshi Kurosaka |author8=Rika Azuma |author9=Igor I. Kolodeznikov |author10=Albert V. Protopopov |author11=Valerii V. Plotnikov |author12=Hisato Kobayashi |author13=Ryouka Kawahara-Miki |author14=Tomohiro Kono |author15=Masao Uchida |author16=Yasuyuki Shibata |author17=Tetsuya Handa |author18=Hiroshi Kimura |author19=Yoshihiko Hosoi |author20=Tasuku Mitani |author21=Kazuya Matsumoto |author22=Akira Iritani |year=2019 |title=Signs of biological activities of 28,000-year-old mammoth nuclei in mouse oocytes visualized by live-cell imaging |journal=Scientific Reports |volume=9 |issue=1 |pages=Article number 4050 |doi=10.1038/s41598-019-40546-1 |pmid=30858410 |pmc=6411884 |bibcode=2019NatSR...9.4050Y }}</ref>
* A study on the isotopic compositions of carbon, nitrogen and sulfur in collagen in the population of woolly mammoths from the Wrangel Island ({{wipe|Russia}}), aiming to determine the ecology of the Wrangel Island mammoth population and most likely cause of its extinction, is published by Arppe ''et al.'' (2019).<ref>{{cite journal |author1=Laura Arppe |author2=Juha A. Karhu |author3=Sergey Vartanyan |author4=Dorothée G. Drucker |author5=Heli Etu-Sihvola |author6=Hervé Bocherens |year=2019 |title=Thriving or surviving? The isotopic record of the Wrangel Island woolly mammoth population |journal=Quaternary Science Reviews |volume=222 |pages=Article 105884 |doi=10.1016/j.quascirev.2019.105884 |bibcode=2019QSRv..22205884A |doi-access=free }}</ref>
* A study on the cause of the extinction of the [[Biology:Columbian mammoth|Columbian mammoth]], using mathematical modelling to test the [[Earth:Quaternary extinction event#Overkill hypothesis|overkill hypothesis]], is published by Klapman & Capaldi (2019).<ref>{{Cite journal|author1=Matthew Klapman |author2=Alex Capaldi |year=2019 |title=A simulation of anthropogenic Columbian mammoth (''Mammuthus columbi'') extinction |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=5 |pages=610–617 |doi=10.1080/08912963.2017.1383987 |s2cid=90015342 }}</ref>
* A study on the diet of coexisting early Late Pleistocene [[Biology:Asian elephant|Asian elephant]]s and members of the species ''[[Biology:Stegodon|Stegodon]] orientalis'', as indicated by data from stable isotope analyses of [[Biology:Tooth enamel|enamel]] of teeth from the Quzai Cave (southern {{wipe|China}}), is published by Ma ''et al.'' (2019).<ref>{{cite journal |author1=Jiao Ma |author2=Yuan Wang |author3=Changzhu Jin |author4=Yaowu Hu |author5=Hervé Bocherens |year=2019 |title=Ecological flexibility and differential survival of Pleistocene ''Stegodon orientalis'' and ''Elephas maximus'' in mainland southeast Asia revealed by stable isotope (C, O) analysis |journal=Quaternary Science Reviews |volume=212 |pages=33–44 |doi=10.1016/j.quascirev.2019.03.021 |bibcode=2019QSRv..212...33M }}</ref>
* A review of Pleistocene proboscideans from the Eastern [[Place:Mediterranean Sea|Mediterranean]] islands is published by Athanassiou, van der Geer & Lyras (2019).<ref>{{Cite journal|author1=Athanassios Athanassiou |author2=Alexandra A.E. van der Geer |author3=George A. Lyras |year=2019 |title=Pleistocene insular Proboscidea of the Eastern Mediterranean: A review and update |journal=Quaternary Science Reviews |volume=218 |pages=306–321 |doi=10.1016/j.quascirev.2019.06.028 |bibcode=2019QSRv..218..306A }}</ref>

{| class="wikitable sortable" align="center" width="100%"
|-
! Name !! Novelty !! Status !! Authors !! Age !! Type locality !! Country !! Notes !! Images
|-
| ''[[Biology:Blancotherium|Blancotherium]]''<ref>{{cite journal |author=Steven R. May |year=2019 |title=The Lapara Creek Fauna: Early Clarendonian of south Texas, USA |journal=Palaeontologia Electronica |volume=22 |issue=1 |pages=Article number 22.1.15 |doi=10.26879/929 |doi-access=free }}</ref>
| Gen. et comb. nov
| Valid
| May
| Early [[Earth:Clarendonian|Clarendonian]]
| [[Earth:Goliad Formation|Goliad]]
| {{Flag|United States}}<br />({{Flag|Texas}})
| A [[Biology:Gomphothere|gomphothere]]; a new genus for ''"[[Biology:Gnathabelodon|Gnathabelodon]]" buckneri'' Sellards (1940)
| 
|-
| ''[[Biology:Culebratherium|Culebratherium]]''<ref>{{cite journal |author1=Jorge Velez-Juarbe |author2=Aaron R. Wood |year=2019 |title=An early Miocene dugongine (Sirenia: Dugongidae) from Panama |journal=Journal of Vertebrate Paleontology |volume=38 |issue=5 |pages=e1511799 |doi=10.1080/02724634.2018.1511799 |s2cid=92728365 }}</ref>
| Gen. et sp. nov
| Valid
| Velez-Juarbe & Wood
| [[Earth:Early Miocene|Early Miocene]]
| [[Earth:Culebra Formation|Culebra]]
| {{Flag|Panama}}
| A relative of the [[Biology:Dugong|dugong]]. Genus includes new species ''C. alemani''.
| 
|-
| ''Damarachloris''<ref>{{Cite journal|author=Martin Pickford |year=2019 |title=New Chrysochloridae (Mammalia) from the middle Eocene of Black Crow, Namibia |journal=Communications of the Geological Survey of Namibia |volume=21 |pages=40–47 |url=http://www.mme.gov.na/files/publications/412_GSN%20Comms%2020_5_Pickford%20Chrysochloridae.pdf }}</ref>
| Gen. et sp. nov
| Valid
| Pickford
| Middle Eocene
| [[Earth:Black Crow Limestone|Black Crow]]
| {{Flag|Namibia}}
| A [[Biology:Golden mole|golden mole]]. The type species is ''D. primaevus''.
| 
|-
| ''Eteketoni''<ref>{{Cite book |author=Martin Pickford |year=2019 |title=Orycteropodidae (Tubulidentata, Mammalia) from the Early Miocene of Napak, Uganda |journal=Münchner Geowissenschaftliche Abhandlungen Reihe A: Geologie und Paläontologie |volume=47 |pages=1–101 |isbn=978-3-89937-247-2 }}</ref>
| Gen. et sp. nov
| Valid
| Pickford
| [[Earth:Early Miocene|Early Miocene]]
| 
| {{Flag|Uganda}}
| A relative of the [[Biology:Aardvark|aardvark]]. Genus includes new species ''E. platycephalus''.
| 
|-
| ''Mammut pacificus''<ref>{{cite journal |author1=Alton C. Dooley |author2=Eric Scott |author3=Jeremy Green |author4=Kathleen B. Springer |author5=Brett S. Dooley |author6=Gregory James Smith |year=2019 |title=''Mammut pacificus'' sp. nov., a newly recognized species of mastodon from the Pleistocene of western North America |journal=PeerJ |volume=7 |pages=e6614 |doi=10.7717/peerj.6614 |pmid=30944777 |pmc=6441323 }}</ref>
| Sp. nov
| Valid
| Dooley ''et al.''
| [[Earth:Pleistocene|Pleistocene]] ([[Biology:Rancholabrean|Rancholabrean]])
| 
| {{Flag|United States}}<br />({{Flag|California}}<br />{{Flag|Idaho}})
| A [[Biology:Mastodon|mastodon]]
|
|-
| ''Nanogale''<ref>{{Cite journal|author=Martin Pickford |year=2019 |title=Tiny Tenrecomorpha (Mammalia) from the Eocene of Black Crow, Namibia |journal=Communications of the Geological Survey of Namibia |volume=21 |pages=15–25 |url=http://www.mme.gov.na/files/publications/9ec_GSN%20Comms%2020_2_Pickford%20Nanogale.pdf }}</ref>
| Gen. et sp. nov
| Valid
| Pickford
| Middle Eocene
| [[Earth:Black Crow Limestone|Black Crow]]
| {{Flag|Namibia}}
| A member of [[Biology:Tenrecomorpha|Tenrecomorpha]]. The type species is ''N. fragilis''.
| 
|-
| ''Norosiren''<ref>{{cite journal |author1=Karen E. Samonds |author2=Rebekah A. Ernat |author3=Tsiory Andrianavalona |author4=Daryl P. Domning |year=2019 |title=New Miocene sirenians from Nosy Makamby, northwestern Madagascar |journal=Journal of Vertebrate Paleontology |volume=39 |issue=1 |pages=e1570223 |doi=10.1080/02724634.2019.1570223 |s2cid=132496360 }}</ref>
| Gen. et sp. nov
| Valid
| Samonds ''et al.''
| Miocene
| Mahajanga
| {{Flag|Madagascar}}
| A relative of the [[Biology:Dugong|dugong]]. Genus includes new species ''N. zazavavindrano''.
|
|-
| ''[[Biology:Saloumia|Saloumia]]''<ref>{{Cite journal|author1=Rodolphe Tabuce |author2=Raphaël Sarr |author3=Sylvain Adnet |author4=Renaud Lebrun |author5=Fabrice Lihoreau |author6=Jeremy E. Martin |author7=Bernard Sambou |author8=Mustapha Thiam |author9=Lionel Hautier |year=2019 |title=Filling a gap in the proboscidean fossil record: a new genus from the Lutetian of Senegal |journal=Journal of Paleontology |volume=94 |issue=3 |pages=580–588 |doi=10.1017/jpa.2019.98 |s2cid=213978026 |url=https://hal.archives-ouvertes.fr/hal-02408861/file/Tabuce-Saloumia.pdf }}</ref>
| Gen. et sp. nov
| Valid
| Tabuce ''et al.''
| [[Earth:Eocene|Eocene]] ([[Earth:Lutetian|Lutetian]])
| 
| {{Flag|Senegal}}
| An early member of [[Biology:Proboscidea|Proboscidea]]. Genus includes new species ''S. gorodiskii''.
| 
|-
| ''[[Biology:Stegosiren|Stegosiren]]''<ref>{{cite journal |author1=Daryl P. Domning |author2=Brian L. Beatty |year=2019 |title=Fossil Sirenia of the West Atlantic and Caribbean region. XII. ''Stegosiren macei'', gen. et sp. nov. |journal=Journal of Vertebrate Paleontology |volume=39 |issue=3 |pages=e1650369 |doi=10.1080/02724634.2019.1650369 |s2cid=203407242 }}</ref>
| Gen. et sp. nov
| Valid
| Domning & Beatty
| [[Earth:Oligocene|Oligocene]]
| Ashley<br />Chandler Bridge
| {{Flag|United States}}<br />({{Flag|South Carolina}})
| A relative of the [[Biology:Dugong|dugong]]. Genus includes new species ''S. macei''.
| 
|-
|}

===Bats===
* A study on the completeness of the bat fossil record is published by Brown ''et al.'' (2019).<ref>{{Cite journal|author1=Emily E. Brown |author2=Daniel D. Cashmore |author3=Nancy B. Simmons |author4=Richard J. Butler |year=2019 |title=Quantifying the completeness of the bat fossil record |journal=Palaeontology |volume=62 |issue=5 |pages=757–776 |doi=10.1111/pala.12426 |doi-access=free }}</ref>
* A study on aerodynamic features of ''[[Biology:Onychonycteris|Onychonycteris]] finneyi'' is published by Amador, Simmons & Giannini (2019).<ref>{{Cite journal|author1=Lucila I. Amador |author2=Nancy B. Simmons |author3=Norberto P. Giannini |year=2019 |title=Aerodynamic reconstruction of the primitive fossil bat ''Onychonycteris finneyi'' (Mammalia: Chiroptera) |journal=Biology Letters |volume=15 |issue=3 |pages=Article ID 20180857 |doi=10.1098/rsbl.2018.0857 |pmid=30862309 |pmc=6451380 }}</ref>
* Description of [[Earth:Pleistocene|Pleistocene]] and [[Earth:Holocene|Holocene]] bat fossils from the Grotta dei Pipistrelli ([[Place:Sicily|Sicily]], Italy) is published by Salari ''et al.'' (2019).<ref>{{Cite journal|author1=Leonardo Salari |author2=Paolo Agnelli |author3=Lucio Calcagnile |author4=Jessica Di Maita |author5=Rosario Grasso |author6=Gianluca Quarta |author7=Corrado Santoro |author8=Maria Teresa Spena |year=2019 |title=The fossil bat assemblages from the Grotta dei Pipistrelli in Pantalica (southeastern Sicily, Italy): Chronological and palaeoecological implications |journal=Comptes Rendus Palevol |volume=18 |issue=4 |pages=417–441 |doi=10.1016/j.crpv.2019.01.007 |doi-access=free }}</ref>

{| class="wikitable sortable" align="center" width="100%"
|-
! Name !! Novelty !! Status !! Authors !! Age !! Type locality !! Country !! Notes !! Images
|-
| ''Barbastella maxima''<ref>{{Cite journal|author1=Valentina V. Rosina |author2=Sergei Kruskop |author3=Yuriy Semenov |year=2019 |title=New Late Miocene plecotine bats (Chiroptera, Vespertilionidae: Plecotini) from Gritsev, Ukraine |journal=Palæovertebrata |volume=42 |issue=1 |pages=e2 |doi=10.18563/pv.42.1.e2 }}</ref>
| Sp. nov
| Valid
| Rosina, Kruskop & Semenov
| Late Miocene
| 
| {{Flag|Ukraine}}
| A species of ''[[Biology:Barbastella|Barbastella]]''
|
|-
| ''Koopmanycteris''<ref>{{Cite journal|author1=Gary S. Morgan |author2=Nicholas J. Czaplewski |author3=Nancy B. Simmons |year=2019 |title=A new mormoopid bat from the Oligocene (Whitneyan and early Arikareean) of Florida, and phylogenetic relationships of the major clades of Mormoopidae (Mammalia, Chiroptera) |journal=Bulletin of the American Museum of Natural History |volume=2019 |issue=434 |pages=1–146 |doi=10.1206/0003-0090.434.1.1 |hdl=2246/6944 |url=https://www.biodiversitylibrary.org/item/268305 }}</ref>
| Gen. et sp. nov
| Valid
| Morgan, Czaplewski & Simmons
| [[Earth:Oligocene|Oligocene]]
| 
| {{Flag|United States}}<br />({{Flag|Florida}})
| A member of the family [[Biology:Mormoopidae|Mormoopidae]]. The type species is ''K. palaeomormoops''.
| 
|-
| ''Myotis gerhardstorchi''<ref>{{cite journal |author1=Ivan Horáček |author2=Eva Trávníčková |year=2019 |title=''Myotis gerhardstorchi'' sp. n. and comments on the European fossil record of ''Myotis frater'' group (Mammalia, Chiroptera) |journal=Fossil Imprint |volume=75 |issue=3–4 |pages=315–342 |doi=10.2478/if-2019-0021 |s2cid=210921764 |doi-access=free }}</ref>
| Sp. nov
| Valid
| Horáček & Trávníčková
| Early Pliocene
| 
| {{Flag|Hungary}}
| A [[Biology:Mouse-eared bat|mouse-eared bat]]
|
|-
| ''Quinetia frigidaria''<ref>{{Cite journal|author1=Nicholas Czaplewski |author2=Jeff Person |author3=Clint Boyd |author4=Robert Emry |year=2019 |title=A new species of bat (Chiroptera: Vespertilionidae) from the early Oligocene global cooling period, Brule Formation, North Dakota, USA |journal=Palæovertebrata |volume=42 |issue=2 |pages=e2 |doi=10.18563/pv.42.2.e2 }}</ref>
| Sp. nov
| Valid
| Czaplewski ''et al.''
| [[Biology:Whitneyan|Whitneyan]]
| Brule
| {{Flag|United States}}<br />({{Flag|North Dakota}})
| A member of the family [[Biology:Vespertilionidae|Vespertilionidae]]
|
|-
|}

===Notoungulates===
* A study on variations of incisor [[Biology:Tooth enamel|enamel]] microstructure in [[Biology:Notoungulata|notoungulates]] and on their evolutionary and ecological significance is published online by Filippo ''et al.'' (2019).<ref>{{Cite journal|author1=Andréa Filippo |author2=Daniela C. Kalthoff |author3=Guillaume Billet |author4=Helder Gomes Rodrigues |year=2019 |title=Evolutionary and functional implications of incisor enamel microstructure diversity in Notoungulata (Placentalia, Mammalia) |journal=Journal of Mammalian Evolution |volume=27 |issue=2 |pages=211–236 |doi=10.1007/s10914-019-09462-z |s2cid=76662912 |doi-access=free }}</ref>
* First skeletal remains of ''[[Biology:Notostylops|Notostylops]] murinus'' recovered from middle [[Earth:Eocene|Eocene]] levels of the Sarmiento Formation ({{wipe|Argentina}}) are described by Lorente, Gelfo & López (2019).<ref>{{cite journal |author1=Malena Lorente |author2=Javier N. Gelfo |author3=Guillermo M. López |year=2019 |title=First skeleton of the notoungulate mammal ''Notostylops murinus'' and palaeobiology of Eocene Notostylopidae |journal=Lethaia |volume=52 |issue=2 |pages=244–259 |doi=10.1111/let.12310 }}</ref>
* New fossil specimen of ''Pampahippus secundus'' is described from the [[Earth:Eocene|Eocene]] Upper Lumbrera Formation ({{wipe|Argentina}}) by García-López ''et al.'' (2019).<ref>{{cite journal |author1=Daniel A. García-López |author2=Virginia Deraco |author3=Guillermo W. Rougier |author4=Cecilia del Papa |author5=Judith Babot |author6=Sara Bertelli |author7=Claudia M. Herrera |author8=Norberto P. Giannini |year=2019 |title=New record of ''Pampahippus secundus'' (Mammalia, Notoungulata) from the Upper Lumbrera Formation, Eocene of northwestern Argentina |journal=Journal of Vertebrate Paleontology |volume=39 |issue=2 |pages=e1582537 |doi=10.1080/02724634.2019.1582537 |s2cid=146032926 }}</ref>
* A study on the anatomy and phylogenetic relationships of ''[[Biology:Notohippus|Notohippus]] toxodontoides'', as indicated by data from specimens from the Río Bote locality in the early Miocene Santa Cruz Formation ({{wipe|Argentina}}), is published by Del Pino ''et al.'' (2019).<ref>{{cite journal |author1=Santiago Hernández Del Pino |author2=Mercedes Fernández |author3=Esperanza Cerdeño |author4=Juan C. Fernicola |year=2019 |title=Anatomy and systematics of ''Notohippus toxodontoides'' Ameghino, 1891 (Mammalia, Notoungulata), from the Miocene of Santa Cruz Province, Argentina |journal=Journal of Vertebrate Paleontology |volume=39 |issue=1 |pages=e1577870 |doi=10.1080/02724634.2019.1577870 |s2cid=164241447 }}</ref>
* A systematic revision of the genus ''[[Biology:Patriarchus|Patriarchus]]'' and a study on the phylogenetic relationships of this genus within the [[Biology:Interatheriidae|Interatheriidae]] is published by Fernández, Fernicola & Cerdeño (2019).<ref>{{cite journal |author1=Mercedes Fernández |author2=Juan C. Fernicola |author3=Esperanza Cerdeño |year=2019 |title=The genus ''Patriarchus'' Ameghino, 1889 (Mammalia, Notoungulata, Typotheria), from the Santa Cruz Formation, Santa Cruz Province, Argentina |journal=Journal of Vertebrate Paleontology |volume=39 |issue=2 |pages=e1613416 |doi=10.1080/02724634.2019.1613416 |s2cid=198262303 }}</ref>
* A study on the braincase anatomy in [[Biology:Mesotheriidae|mesotheriid]] [[Biology:Notoungulata|notoungulates]] is published by Fernández-Monescillo ''et al.'' (2019).<ref>{{cite journal |author1=Marcos Fernández-Monescillo |author2=Pierre-Olivier Antoine |author3=François Pujos |author4=Helder Gomes Rodrigues |author5=Bernardino Mamani Quispe |author6=Maeva Orliac |year=2019 |title=Virtual endocast morphology of Mesotheriidae (Mammalia, Notoungulata, Typotheria): new insights and implications on notoungulate encephalization and brain evolution |journal=Journal of Mammalian Evolution |volume=26 |issue=1 |pages= 85–100|doi=10.1007/s10914-017-9416-7 |s2cid=25227641 }}</ref>
* Partial skeleton of ''Plesiotypotherium achirense'' showing multiple skeletal and dental pathologies is described from the late Miocene locality of Achiri (Bolivian Altiplano) by Fernández-Monescillo ''et al.'' (2019).<ref>{{cite journal |author1=Marcos Fernández-Monescillo |author2=Pierre-Olivier Antoine |author3=Bernardino Mamani Quispe |author4=Philippe Münch |author5=Rubén Andrade Flores |author6=Laurent Marivaux |author7=François Pujos |year=2019 |title=Multiple skeletal and dental pathologies in a late Miocene mesotheriid (Mammalia, Notoungulata) from the Altiplano of Bolivia: Palaeoecological inferences |journal=Palaeogeography, Palaeoclimatology, Palaeoecology |volume=534 |pages=Article 109297 |doi=10.1016/j.palaeo.2019.109297 |bibcode=2019PPP...534j9297F |url=https://hal.umontpellier.fr/hal-02263895/file/FINAL-Text.%20Palaeo-3%20Rev-1.pdf }}</ref>
* A revision and a study on the phylogenetic relationships of the [[Earth:Friasian|Friasian]] and [[Biology:Mayoan|Mayoan]] [[Biology:Interatheriinae|interatheriine]] [[Biology:Interatheriidae|interatheriid]] notoungulates from southern {{wipe|Argentina}} and {{wipe|Chile}} is published by Vera ''et al.'' (2019).<ref>{{cite journal |author1=Bárbara Vera |author2=Laureano González Ruiz |author3=Nelson Novo |author4=Gabriel Martin |author5=Agustina Reato |author6=Marcelo F. Tejedor |year=2019 |title=The Interatheriinae (Mammalia, Notoungulata) of the Friasian sensu stricto and Mayoan (middle to late Miocene), and the fossils from Cerro Zeballos, Patagonia, Argentina |journal=Journal of Systematic Palaeontology |volume=17 |issue=13 |pages=1143–1163 |doi=10.1080/14772019.2018.1511387 |s2cid=92416681 }}</ref>
* A systematic re-evaluation of [[Biology:Hegetotheriidae|hegetotheriid]] notoungulates belonging to the genera ''[[Biology:Hegetotherium|Hegetotherium]]'' and ''[[Biology:Pachyrukhos|Pachyrukhos]]'' is published by Seoane & Cerdeño (2019).<ref>{{cite journal |author1=Federico Damián Seoane |author2=Esperanza Cerdeño |year=2019 |title=Systematic revision of ''Hegetotherium'' and ''Pachyrukhos'' (Hegetotheriidae, Notoungulata) and a new phylogenetic analysis of Hegetotheriidae |journal=Journal of Systematic Palaeontology |volume=17 |issue=19 |pages=1635–1663 |doi=10.1080/14772019.2018.1545146 |s2cid=92218443 }}</ref>
* A revision of the fossil material assigned to the genera ''Propachyrucos'' and ''[[Biology:Prosotherium|Prosotherium]]'' is published by Seoane, Cerdeño & Singleton (2019).<ref>{{cite journal |author1=Federico Damián Seoane | author2=Esperanza Cerdeño | author3=Hayley Singleton |year=2019 |title=Re-assessment of the Oligocene genera ''Prosotherium'' and ''Propachyrucos'' (Hegetotheriidae, Notoungulata) |journal=Comptes Rendus Palevol |volume=18 |issue=6 |pages=643–662 |doi=10.1016/j.crpv.2019.07.001 |doi-access=free }}</ref>
* Detailed reconstruction of the masticatory muscles of ''[[Biology:Paedotherium|Paedotherium]]'' and ''[[Biology:Tremacyllus|Tremacyllus]]'' is presented by Ercoli, Álvarez & Candela (2019), who report the presence of a true sciuromorph condition [[Biology:Convergent evolution|convergent]] with the condition evolved by rodents.<ref>{{cite journal |author1=Marcos D. Ercoli | author2=Alicia Álvarez | author3=Adriana M. Candela |year=2019 |title=Sciuromorphy outside rodents reveals an ecomorphological convergence between squirrels and extinct South American ungulates |journal=Communications Biology |volume=2 |pages=Article number 202 |doi=10.1038/s42003-019-0423-5 |pmid=31231692 |pmc=6546766 }}</ref>
* A study on the anatomy of limbs of the [[Biology:Toxodonta|toxodont]] ''Isotemnus'' is published online by Lorente (2019).<ref>{{cite journal |author=Malena Lorente |year=2019 |title=The limb anatomy of ''Isotemnus'', one of the most basal toxodontid notoungulates |journal=Ameghiniana |volume=57 |issue=2 |pages=80–89 |doi=10.5710/AMGH.18.10.2019.3272 |s2cid=210343055 }}</ref>

{| class="wikitable sortable" align="center" width="100%"
|-
! Name !! Novelty !! Status !! Authors !! Age !! Type locality !! Country !! Notes !! Images
|-
| ''Hemihegetotherium tantillum''<ref>{{cite journal |author=B. Vera |year=2019 |title=A new species and the record of ''Hemihegetotherium'' (Notoungulata, Hegetotheriidae) in the middle to Late Miocene of Patagonia, Argentina |journal=Journal of South American Earth Sciences |volume=93 |pages=23–35 |doi=10.1016/j.jsames.2019.04.017 |bibcode=2019JSAES..93...23V }}</ref>
| Sp. nov
| Valid
| Vera
| Miocene
| [[Earth:Collón Curá Formation|Collón Curá]]
| {{Flag|Argentina}}
| A [[Biology:Hegetotheriidae|hegetotheriid]] [[Biology:Notoungulata|notoungulate]]
| 
|-
| ''Orome''<ref>{{cite journal |author1=Nicolás Bauzá |author2=Javier N. Gelfo |author3=Guillermo M. López |year=2019 |title=Early steps in the radiation of notoungulate mammals in southern South America: A new henricosborniid from the Eocene of Patagonia |journal=Acta Palaeontologica Polonica |volume=64 |issue=3 |pages=597–603 |doi=10.4202/app.00565.2018 |doi-access=free }}</ref>
| Gen. et sp. nov
| Valid
| Bauzá, Gelfo & López
| [[Earth:Eocene|Eocene]] ([[Earth:Ypresian|Ypresian]])
| Las Flores
| {{Flag|Argentina}}
| A [[Biology:Henricosborniidae|henricosborniid]] notoungulate. The type species is ''O. deepi''.
| 
|-
| ''[[Biology:Protypotherium|Protypotherium concepcionensis]]''<ref>{{cite journal |author1=Andrés Solórzano |author2=Alfonso Encinas |author3=René Bobe |author4=Reyes Maximiliano |author5=Gabriel Carrasco |year=2019 |title=The Early to late Middle Miocene mammalian assemblages from the Cura-Mallín Formation, at Lonquimay, southern Central Andes, Chile (~38°S): Biogeographical and paleoenvironmental implications |journal=Journal of South American Earth Sciences |volume=96 |pages=Article 102319 |doi=10.1016/j.jsames.2019.102319 |bibcode=2019JSAES..9602319S }}</ref>
| Sp. nov
| Valid
| Solórzano ''et al.''
| Miocene
| [[Earth:Cura-Mallín Group|Cura-Mallín]]
| {{Flag|Chile}}
| An [[Biology:Interatheriidae|interatheriid]] [[Biology:Notoungulata|notoungulate]]
|
|-
|}

===Odd-toed ungulates===
* A study on the anatomy of the skeleton of extant [[Biology:Tapir|tapir]]s and [[Biology:Endemism|endemic]] [[Earth:Eocene|Eocene]] European odd-toed ungulates, aiming to determine whether tapirs represent viable analogues for locomotion in [[Biology:Palaeotheriidae|palaeotheres]] and [[Biology:Lophiodontidae|lophiodontids]], is published online by MacLaren & Nauwelaerts (2019).<ref>{{cite journal |author1=Jamie A. MacLaren |author2=Sandra Nauwelaerts |year=2019 |title=Modern tapirs as morphofunctional analogues for locomotion in endemic Eocene European perissodactyls |journal=Journal of Mammalian Evolution |volume=27 |issue=2 |pages=245–263 |doi=10.1007/s10914-019-09460-1 |hdl=10067/1580640151162165141 |s2cid=66951945 |hdl-access=free }}</ref>
* A study on the diet and habitat of ''Schlosseria magister'' and ''Lophialetes expeditus'' is published online by Gong ''et al.'' (2019).<ref>{{cite journal |author1=Yanxin Gong |author2=Yuanqing Wang |author3=Yang Wang |author4=Fangyuan Mao |author5=Bin Bai |author6=Haibing Wang |author7=Qian Li |author8=Xun Jin |author9=Xu Wang |author10=Jin Meng |year=2019 |title=Dietary adaptations and palaeoecology of Lophialetidae (Mammalia, Tapiroidea) from the Eocene of the Erlian Basin, China: combined evidence from mesowear and stable isotope analyses |journal=Palaeontology |volume=63 |issue=4 |pages=547–564 |doi=10.1111/pala.12471 }}</ref>
* A study on the intraspecific variation of the skeletal anatomy in the lophiodontid species ''Eolophiodon laboriense'' is published by Vautrin ''et al.'' (2019).<ref>{{cite journal |author1=Quentin Vautrin |author2=Rodolphe Tabuce |author3=Yves Laurent |author4=Dominique Vidalenc |author5=Fabrice Lihoreau |year=2019 |title=Intraspecific variation of ''Eolophiodon laboriense'', a basal Lophiodontidae (Mammalia, Perissodactyla) from the early Eocene of Southern France |journal=Geobios |volume=53 |pages=51–63 |doi=10.1016/j.geobios.2019.02.005 }}</ref>
* A study on the morphology of the nares of the [[Biology:Brontotheriidae|brontotheres]] ''Metarhinus'' and ''Sphenocoelus'', and on their functional significance, is published by Mader (2019).<ref>{{cite journal |author=Bryn J. Mader |year=2019 |title=The narial morphology of ''Metarhinus'' and ''Sphenocoelus'' (Mammalia, Perissodactyla, Brontotheriidae) |journal=Palaeontologia Electronica |volume=22 |issue=1 |pages=Article number 22.1.8 |doi=10.26879/919 |doi-access=free }}</ref>
* A revision of the fossil material of rhinocerotids from the Miocene (Agenian) of Wischberg ({{wipe|Switzerland}}) is published by Jame ''et al.'' (2019).<ref>{{cite journal |author1=Claire Jame |author2=Jérémy Tissier |author3=Olivier Maridet |author4=Damien Becker |year=2019 |title=Early Agenian rhinocerotids from Wischberg (Canton Bern, Switzerland) and clarification of the systematics of the genus ''Diaceratherium'' |journal=PeerJ |volume=7 |pages=e7517 |doi=10.7717/peerj.7517 |pmid=31523499 |pmc=6717501 }}</ref>
* A study on the abundance of members of the genera ''Aphelops'' and ''[[Biology:Teleoceras|Teleoceras]]'' from the middle Miocene to the Pliocene of the Great Plains, and on possible causes of their extinction, is published online by Wang & Secord (2019).<ref>{{cite journal |author1=Bian Wang |author2=Ross Secord |year=2019 |title=Paleoecology of ''Aphelops'' and ''Teleoceras'' (Rhinocerotidae) through an interval of changing climate and vegetation in the Neogene of the Great Plains, central United States |journal=Palaeogeography, Palaeoclimatology, Palaeoecology |volume=542 |pages=Article 109411 |doi=10.1016/j.palaeo.2019.109411 |doi-access=free }}</ref>
* A study on the phylogenetic relationships of the Eurasian rhinocerotids of the Pleistocene epoch, based on data from the [[Biology:Proteome|proteome]] from [[Biology:Tooth enamel|enamel]] of a tooth of a member of the genus ''Stephanorhinus'' from the Dmanisi site ([[Place:Georgia (country)|Georgia]]), is published by Cappellini ''et al.'' (2019).<ref>{{cite journal |author1=Enrico Cappellini |author2=Frido Welker |author3=Luca Pandolfi |author4=Jazmín Ramos-Madrigal |author5=Diana Samodova |author6=Patrick L. Rüther |author7=Anna K. Fotakis |author8=David Lyon |author9=J. Víctor Moreno-Mayar |author10=Maia Bukhsianidze |author11=Rosa Rakownikow Jersie-Christensen |author12=Meaghan Mackie |author13=Aurélien Ginolhac |author14=Reid Ferring |author15=Martha Tappen |author16=Eleftheria Palkopoulou |author17=Marc R. Dickinson |author18=Thomas W. Stafford Jr |author19=Yvonne L. Chan |author20=Anders Götherström |author21=Senthilvel K. S. S. Nathan |author22=Peter D. Heintzman |author23=Joshua D. Kapp |author24=Irina Kirillova |author25=Yoshan Moodley |author26=Jordi Agusti |author27=Ralf-Dietrich Kahlke |author28=Gocha Kiladze |author29=Bienvenido Martínez-Navarro |author30=Shanlin Liu |author31=Marcela Sandoval Velasco |author32=Mikkel-Holger S. Sinding |author33=Christian D. Kelstrup |author34=Morten E. Allentoft |author35=Ludovic Orlando |author36=Kirsty Penkman |author37=Beth Shapiro |author38=Lorenzo Rook |author39=Love Dalén |author40=M. Thomas P. Gilbert |author41=Jesper V. Olsen |author42=David Lordkipanidze |author43=Eske Willerslev |year=2019 |title=Early Pleistocene enamel proteome from Dmanisi resolves ''Stephanorhinus'' phylogeny |journal=Nature |volume=574 |issue=7776 |pages=103–107 |doi=10.1038/s41586-019-1555-y |pmid=31511700 |pmc=6894936 |bibcode=2019Natur.574..103C }}</ref>
* A study on the timing of extinction of ''Elasmotherium sibiricum'' will be published by Kosintsev ''et al.'' (2019), who report evidence indicating that this species survived in Eastern Europe and Central Asia until at least 39,000 years ago.<ref>{{Cite journal|author1=Pavel Kosintsev |author2=Kieren J. Mitchell |author3=Thibaut Devièse |author4=Johannes van der Plicht |author5=Margot Kuitems |author6=Ekaterina Petrova |author7=Alexei Tikhonov |author8=Thomas Higham |author9=Daniel Comeskey |author10=Chris Turney |author11=Alan Cooper |author12=Thijs van Kolfschoten |author13=Anthony J. Stuart |author14=Adrian M. Lister |year=2019 |title=Evolution and extinction of the giant rhinoceros ''Elasmotherium sibiricum'' sheds light on late Quaternary megafaunal extinctions |journal=Nature Ecology & Evolution |volume=3 |issue=1 |pages=31–38 |doi=10.1038/s41559-018-0722-0 |pmid=30478308 |s2cid=53726338 |url=https://ora.ox.ac.uk/objects/uuid:ae9eac15-c4a7-4adc-9ac2-ff3345b59489 }}</ref>
* A study on cheek teeth and mandibular remains of a middle Pleistocene rhinoceros from the Matsugae Cave ({{wipe|Japan}}), previously identified as belonging to a member of the genus ''[[Biology:Dicerorhinus|Dicerorhinus]]'', is published online by Handa, Kohno & Kudo (2019), who reinterpret this fossil material as belonging to a member of the genus ''Stephanorhinus''.<ref>{{Cite journal|author1=Naoto Handa |author2=Naoki Kohno |author3=Yuichiro Kudo |year=2019 |title=Reappraisal of a middle Pleistocene rhinocerotid (Mammalia, Perissodactyla) from the Matsugae Cave, Fukuoka Prefecture, southwestern Japan |journal=Historical Biology: An International Journal of Paleobiology |volume=33 |issue=2 |pages= 1–12|doi=10.1080/08912963.2019.1604699 |s2cid=145930245 }}</ref>
* A study on efficiency of the different modes of mastication, changes in the different masticatory paths and probable diets of early members of Equoidea is published by Engels & Schultz (2019).<ref>{{Cite journal|author1=Sandra Engels |author2=Julia A. Schultz |year=2019 |title=Evolution of the power stroke in early Equoidea (Perissodactyla, Mammalia) |journal=Palaeobiodiversity and Palaeoenvironments |volume=99 |issue=2 |pages=271–291 |doi=10.1007/s12549-018-0341-4 |s2cid=133808650 }}</ref>
* A study on the daily and seasonal movements of [[Biology:Equidae|equids]] from two Miocene fossil sites in northern Florida, as indicated by data from [[Chemistry:Strontium|strontium]] isotope ratios in [[Biology:Tooth enamel|tooth enamel]], will be published by Wallace, Crowley & Miller (2019).<ref>{{cite journal |author1=Jenelle P. Wallace |author2=Brooke E. Crowley |author3=Joshua H. Miller |year=2019 |title=Investigating equid mobility in Miocene Florida, USA using strontium isotope ratios |journal=Palaeogeography, Palaeoclimatology, Palaeoecology |volume=516 |pages=232–243 |doi=10.1016/j.palaeo.2018.11.036 |bibcode=2019PPP...516..232W }}</ref>
* A study on the life history of Miocene [[Biology:Hipparionini|hipparionins]], as indicated by teeth [[Biology:Histology|histology]], is published by Orlandi-Oliveras, Nacarino-Meneses & Köhler (2019).<ref>{{cite journal |author1=Guillem Orlandi-Oliveras |author2=Carmen Nacarino-Meneses |author3=Meike Köhler |year=2019 |title=Dental histology of late Miocene hipparionins compared with extant ''Equus'', and its implications for Equidae life history |journal=Palaeogeography, Palaeoclimatology, Palaeoecology |volume=528 |pages=133–146 |doi=10.1016/j.palaeo.2019.04.016 |bibcode=2019PPP...528..133O |url=https://ddd.uab.cat/record/215294 }}</ref>
* Description of new fossil material of hipparions from the Miocene locality Ravin des Zouaves-5 (Greece), and a study on the taxonomy and phylogenetic relationships of these equids, is published by Koufos & Vlachou (2019).<ref>{{Cite journal|author1=George D. Koufos |author2=Theodora D. Vlachou |year=2019 |title=New material and revision of hipparions from the upper Miocene locality Ravin des Zouaves-5, RZO of Axios Valley (Macedonia, Greece) |journal=Geobios |volume=57 |pages=33–52 |doi=10.1016/j.geobios.2019.10.004 }}</ref>
* Limb bones fossils referred to ''[[Biology:Hipparion|Hipparion]] (Hippotherium) chiai'' are described from the Miocene of the middle reaches of the Yellow River (Shaanxi, China) by Li ''et al.'' (2019), who evaluate the implications of these fossils for the knowledge of the locomotor abilities of ''H. chiai'' and the environment inhabited by members of this species.<ref>{{Cite journal|author1=Yangfan Li |author2=Tao Deng |author3=Hong Hua |author4=Boyang Sun |author5=Yunxiang Zhang |year=2019 |title=Locomotor adaptations of 7.4 Ma Hipparionine fossils from the middle reaches of the Yellow River and their palaeoecological significance |journal=Historical Biology: An International Journal of Paleobiology |volume=33 |issue=7 |pages=927–940 |doi=10.1080/08912963.2019.1669592 |s2cid=204139653 }}</ref>
* Fossils of members of the genus ''[[Biology:Eurygnathohippus|Eurygnathohippus]]'' of uncertain specific assignment are described from the late Pliocene sediments of the Potwar Plateau in {{wipe|Pakistan}} and the Siwalik Hills in northwest {{wipe|India}} by Jukar ''et al.'' (2019), representing the first occurrence of members of this genus outside Africa reported so far.<ref>{{Cite journal|author1=Advait Mahesh Jukar |author2=Boyang Sun |author3=Avinash C. Nanda |author4=Raymond L. Bernor |year=2019 |title=The first occurrence of ''Eurygnathohippus'' Van Hoepen, 1930 (Mammalia, Perissodactyla, Equidae) outside Africa and its biogeographic significance |journal=Bollettino della Società Paleontologica Italiana |volume=58 |issue=2 |pages=171–179 |url=https://www.researchgate.net/publication/335022418 |doi=10.4435/BSPI.2019.13 }}</ref>
* Revision and a study on variability of fossils of ''[[Biology:Dinohippus|Dinohippus]] mexicanus'' from the [[Biology:Hemphillian|Hemphillian]] localities in central Mexico is published by Carranza-Castañeda (2019).<ref>{{Cite journal|author=Oscar Carranza-Castañeda |year=2019 |title=''Dinohippus mexicanus'' (early-late, late, and latest Hemphillian) and the transition to genus ''Equus'', in central Mexico faunas |journal=Frontiers in Earth Science |volume=7 |pages=Article 89 |doi=10.3389/feart.2019.00089 |bibcode=2019FrEaS...7...89C |s2cid=160010963 |doi-access=free }}</ref>
* A review of the evolutionary history of equid locomotor morphology, attempting to explain why the [[Biology:Dactyly#Monodactyly|monodactyly]] evolved only in the lineage leading to modern equids, is published by Janis & Bernor (2019).<ref>{{Cite journal|author1=Christine M. Janis |author2=Raymond L. Bernor |year=2019 |title=The evolution of equid monodactyly: a review including a new hypothesis |journal=Frontiers in Ecology and Evolution |volume=7 |pages=Article 119 |doi=10.3389/fevo.2019.00119 |s2cid=108293123 |doi-access=free }}</ref>
* A study assessing the evidence for different hypotheses explaining how and why monodactyly evolved in equids is published by McHorse, Biewener & Pierce (2019).<ref>{{Cite journal|author1=Brianna K. McHorse |author2=Andrew A. Biewener |author3=Stephanie E. Pierce |year=2019 |title=The evolution of a single toe in horses: causes, consequences, and the way forward |journal=Integrative and Comparative Biology |volume=59 |issue=3 |pages=638–655 |doi=10.1093/icb/icz050 |pmid=31127281 |doi-access=free }}</ref>
* A study on the functions of hypsodonty of the tooth crowns in equids, as indicated by data from extant and fossil equids, is published by Solounias ''et al.'' (2019).<ref>{{Cite journal|author1=Nikos Solounias |author2=Melinda Danowitz |author3=Irvind Buttar |author4=Zachary Coopee |year=2019 |title=Hypsodont crowns as additional roots: a new explanation for hypsodonty |journal=Frontiers in Ecology and Evolution |volume=7 |pages=Article 135 |doi=10.3389/fevo.2019.00135 |s2cid=143431790 |doi-access=free }}</ref>
* A review of [[Physics:Biochronology|biochronologic]] evidence which is the basis of recognizing Land Mammal Ages across different continents, evaluating is implications for the knowledge of the major equid evolutionary events for the last 8 million years, is published by Rook ''et al.'' (2019).<ref>{{Cite journal|author1=Lorenzo Rook |author2=Raymond L. Bernor |author3=Leonardo S. Avilla |author4=Omar Cirilli |author5=Lawrence Flynn |author6=Advait Jukar |author7=William Sanders |author8=Eric Scott |author9=Xiaoming Wang |year=2019 |title=Mammal biochronology (Land Mammal Ages) around the world from late Miocene to middle Pleistocene and major events in horse evolutionary history |journal=Frontiers in Ecology and Evolution |volume=7 |pages=Article 278 |doi=10.3389/fevo.2019.00278 |s2cid=198248974 |doi-access=free }}</ref>
* Description of Pleistocene equid fossils from Cooper's D locality ([[Earth:Cooper's Cave|Cooper's Cave]], {{wipe|South Africa}}) is published by Badenhorst & Steininger (2019).<ref>{{Cite journal|author1=Shaw Badenhorst |author2=Christine M. Steininger |year=2019 |title=The Equidae from Cooper's D, an early Pleistocene fossil locality in Gauteng, South Africa |journal=PeerJ |volume=7 |pages=e6909 |doi=10.7717/peerj.6909 |pmid=31143541 |pmc=6525595 }}</ref>
* A study on DNA extracted from Pleistocene equid fossils from Kunni River bed at Taiping village (Heilongjiang, {{wipe|China}}) is published by Yuan ''et al.'' (2019), who report evidence of presence of ''[[Biology:Equus ovodovi|Equus ovodovi]]'' in China.<ref>{{Cite journal|author1=Jun-Xia Yuan |author2=Xin-Dong Hou |author3=Axel Barlow |author4=Michaela Preick |author5=Ulrike H. Taron |author6=Federica Alberti |author7=Nikolas Basler |author8=Tao Deng |author9=Xu-Long Lai |author10=Michael Hofreiter |author11=Gui-Lian Sheng |year=2019 |title=Molecular identification of late and terminal Pleistocene ''Equus ovodovi'' from northeastern China |journal=PLOS ONE |volume=14 |issue=5 |pages=e0216883 |doi=10.1371/journal.pone.0216883 |pmid=31095634 |pmc=6522033 |bibcode=2019PLoSO..1416883Y |doi-access=free }}</ref>
* A study on teeth of Pleistocene equids from the Anagni Basin (central Italy) and on their implications for the knowledge of the niche occupation and resource exploitation mechanisms of these equids is published by Strani ''et al.'' (2019).<ref>{{Cite journal|author1=Flavia Strani |author2=Diana Pushkina |author3=Hervé Bocherens |author4=Luca Bellucci |author5=Raffaele Sardella |author6=Daniel DeMiguel |year=2019 |title=Dietary adaptations of Early and Middle Pleistocene equids from the Anagni Basin (Frosinone, central Italy) |journal=Frontiers in Ecology and Evolution |volume=7 |pages=Article 176 |doi=10.3389/fevo.2019.00176 |s2cid=157058204 |doi-access=free }}</ref>
* A study on the diversity and evolution of members of the genus ''[[Biology:Equus (genus)|Equus]]'' in North America, Asia, Europe, and Africa, and on its implications for the knowledge origin and evolution of ancient and living [[Biology:Zebra|zebra]]s, is published by Bernor ''et al.'' (2019).<ref>{{Cite journal|author1=Raymond L. Bernor |author2=Omar Cirilli |author3=Advait M. Jukar |author4=Richard Potts |author5=Maia Buskianidze |author6=Lorenzo Rook |year=2019 |title=Evolution of early ''Equus'' in Italy, Georgia, the Indian Subcontinent, East Africa, and the origins of African zebras |journal=Frontiers in Ecology and Evolution |volume=7 |pages=Article 166 |doi=10.3389/fevo.2019.00166 |s2cid=167210725 |doi-access=free }}</ref>
* An overview of research advances from the preceding years concerning the [[Earth:Biostratigraphy|biostratigraphy]] and palaeoecology of the genus ''Equus'' in Europe is published by Boulbes & van Asperen (2019).<ref>{{Cite journal|author1=Nicolas Boulbes |author2=Eline N. van Asperen |year=2019 |title=Biostratigraphy and palaeoecology of European ''Equus'' |journal=Frontiers in Ecology and Evolution |volume=7 |pages=Article 301 |doi=10.3389/fevo.2019.00301 |s2cid=201212032 |doi-access=free }}</ref>
* A review and a study on the evolutionary history of early members of the genus ''Equus'' from {{wipe|China}} is published by Sun & Deng (2019).<ref>{{Cite journal|author1=Boyang Sun |author2=Tao Deng |year=2019 |title=The ''Equus'' Datum and the early radiation of ''Equus'' in China |journal=Frontiers in Ecology and Evolution |volume=7 |pages=Article 429 |doi=10.3389/fevo.2019.00429 |s2cid=207958593 |doi-access=free }}</ref>
* A study on the diversity of native South American members of the genus ''Equus'' is published by Machado & Avilla (2019).<ref>{{Cite journal|author1=Helena Machado |author2=Leonardo Avilla |year=2019 |title=The diversity of South American ''Equus'': did size really matter? |journal=Frontiers in Ecology and Evolution |volume=7 |pages=Article 235 |doi=10.3389/fevo.2019.00235 |s2cid=195769122 |doi-access=free }}</ref>
* A study on the potential range of distribution of South American horses during the transition from the [[Earth:Last Glacial Maximum|Last Glacial Maximum]] to the [[Earth:Holocene|Holocene]], and on its implications for the knowledge of the causes of the Late Quaternary extinction of South American horses, is published by Villavicencio, Corcoran & Marquet (2019).<ref>{{Cite journal|author1=Natalia A. Villavicencio |author2=Derek Corcoran |author3=Pablo A. Marquet |year=2019 |title=Assessing the causes behind the Late Quaternary extinction of horses in South America using species distribution models |journal=Frontiers in Ecology and Evolution |volume=7 |pages=Article 226 |doi=10.3389/fevo.2019.00226 |s2cid=195656032 |doi-access=free }}</ref>
* A review of the [[Earth:Neogene|Neogene]] fossil record of members of [[Biology:Equinae|Equinae]] from Mexico is published by Bravo-Cuevas & Jiménez-Hidalgo (2019).<ref>{{Cite journal|author1=Victor Manuel Bravo-Cuevas |author2=Eduardo Jiménez-Hidalgo |year=2019 |title=Evolutionary significance of Equinae from the Mexican Neogene |journal=Frontiers in Ecology and Evolution |volume=7 |pages=Article 287 |doi=10.3389/fevo.2019.00287 |s2cid=198986626 |doi-access=free }}</ref>
* A study on the diversity and paleoecology of late Pleistocene horses from northwestern and central Oaxaca and central Chiapas (Mexico) is published by Jiménez-Hidalgo ''et al.'' (2019).<ref>{{Cite journal|author1=Eduardo Jiménez-Hidalgo |author2=Gerardo Carbot-Chanona |author3=Rosalía Guerrero-Arenas |author4=Victor Manuel Bravo-Cuevas |author5=Genevieve Safi Holdridge |author6=Isabel Israde-Alcántara |year=2019 |title=Species diversity and paleoecology of Late Pleistocene horses from southern Mexico |journal=Frontiers in Ecology and Evolution |volume=7 |pages=Article 394 |doi=10.3389/fevo.2019.00394 |s2cid=204754305 |doi-access=free }}</ref>
* A study on the metapodial bone [[Biology:Histology|histology]] of ''Equus mosbachensis'' and ''Equus steinheimensis'', and on its implications for the knowledge of the life history of these species, is published online by Nacarino-Meneses & Orlandi-Oliveras (2019).<ref>{{Cite journal|author1=Carmen Nacarino-Meneses |author2=Guillem Orlandi-Oliveras |year=2019 |title=The life history of European Middle Pleistocene equids: first insights from bone histology |journal=Historical Biology: An International Journal of Paleobiology |volume=33 |issue=5 |pages= 1–11|doi=10.1080/08912963.2019.1655011 |s2cid=202014714 }}</ref>
* A study on the evolutionary history of domestic horses, based on DNA data from horse [[Biology:Subfossil|subfossil]]s with ages mostly spanning the last six millennia, is published by Fages ''et al.'' (2019), who present evidence of existence of two extinct horse lineages in Iberia and Siberia during early domestication.<ref>{{Cite journal|author1=Antoine Fages |author2=Kristian Hanghøj |author3=Naveed Khan |author4=Charleen Gaunitz |author5=Andaine Seguin-Orlando |author6=Michela Leonardi |author7=Christian McCrory Constantz |author8=Cristina Gamba |author9=Khaled A.S. Al-Rasheid |author10=Silvia Albizuri |author11=Ahmed H. Alfarhan |author12=Morten Allentoft |author13=Saleh Alquraishi |author14=David Anthony |author15=Nurbol Baimukhanov |author16=James H. Barrett |author17=Jamsranjav Bayarsaikhan |author18=Norbert Benecke |author19=Eloísa Bernáldez-Sánchez |author20=Luis Berrocal-Rangel |author21=Fereidoun Biglari |author22=Sanne Boessenkool |author23=Bazartseren Boldgiv |author24=Gottfried Brem |author25=Dorcas Brown |author26=Joachim Burger |author27=Eric Crubézy |author28=Linas Daugnora |author29=Hossein Davoudi |author30=Peter de Barros Damgaard |author31=María de los Ángeles de Chorro y de Villa-Ceballos |author32=Sabine Deschler-Erb |author33=Cleia Detry |author34=Nadine Dill |author35=Maria do Mar Oom |author36=Anna Dohr |author37=Sturla Ellingvåg |author38=Diimaajav Erdenebaatar |author39=Homa Fathi |author40=Sabine Felkel |author41=Carlos Fernández-Rodríguez |author42=Esteban García-Viñas |author43=Mietje Germonpré |author44=José D. Granado |author45=Jón H. Hallsson |author46=Helmut Hemmer |author47=Michael Hofreiter |author48=Aleksei Kasparov |author49=Mutalib Khasanov |author50=Roya Khazaeli |author51=Pavel Kosintsev |author52=Kristian Kristiansen |author53=Tabaldiev Kubatbek |author54=Lukas Kuderna |author55=Pavel Kuznetsov |author56=Haeedeh Laleh |author57=Jennifer A. Leonard |author58=Johanna Lhuillier |author59=Corina Liesau von Lettow-Vorbeck |author60=Andrey Logvin |author61=Lembi Lõugas |author62=Arne Ludwig |author63=Cristina Luis |author64=Ana Margarida Arruda |author65=Tomas Marques-Bonet |author66=Raquel Matoso Silva |author67=Victor Merz |author68=Enkhbayar Mijiddorj |author69=Bryan K. Miller |author70=Oleg Mochlov |author71=Fatemeh A. Mohaseb |author72=Arturo Morales |author73=Ariadna Nieto-Espinet |author74=Heidi Nistelberger |author75=Vedat Onar |author76=Albína H. Pálsdóttir |author77=Vladimir Pitulko |author78=Konstantin Pitskhelauri |author79=Mélanie Pruvost |author80=Petra Rajic Sikanjic |author81=Anita Rapan Papeša |author82=Natalia Roslyakova |author83=Alireza Sardari |author84=Eberhard Sauer |author85=Renate Schafberg |author86=Amelie Scheu |author87=Jörg Schibler |author88=Angela Schlumbaum |author89=Nathalie Serrand |author90=Aitor Serres-Armero |author91=Beth Shapiro |author92=Shiva Sheikhi Seno |author93=Irina Shevnina |author94=Sonia Shidrang |author95=John Southon |author96=Bastiaan Star |author97=Naomi Sykes |author98=Kamal Taheri |author99=William Taylor |author100=Wolf-Rüdiger Teegen |author101=Tajana Trbojević Vukičević |author102=Simon Trixl |author103=Dashzeveg Tumen |author104=Sainbileg Undrakhbold |author105=Emma Usmanova |author106=Ali Vahdati |author107=Silvia Valenzuela-Lamas |author108=Catarina Viegas |author109=Barbara Wallner |author110=Jaco Weinstock |author111=Victor Zaibert |author112=Benoit Clavel |author113=Sébastien Lepetz |author114=Marjan Mashkour |author115=Agnar Helgason |author116=Kári Stefánsson |author117=Eric Barrey |author118=Eske Willerslev |author119=Alan K. Outram |author120=Pablo Librado |author121=Ludovic Orlando |year=2019 |title=Tracking five millennia of horse management with extensive ancient genome time series |journal=Cell |volume=177 |issue=6 |pages=1419–1435.e31 |doi=10.1016/j.cell.2019.03.049 |pmid=31056281 |pmc=6547883 |display-authors=29 }}</ref>
* A review of the use of the generic name ''Equus'' within different phylogenetic frameworks and a study on the phylogenetic relationships of derived members of [[Biology:Equini|Equini]] is published by Barrón-Ortiz ''et al.'' (2019).<ref>{{Cite journal|author1=Christina I. Barrón-Ortiz |author2=Leonardo S. Avilla |author3=Christopher N. Jass |author4=Víctor M. Bravo-Cuevas |author5=Helena Machado |author6=Dimila Mothé |year=2019 |title=What is ''Equus''? Reconciling taxonomy and phylogenetic analyses |journal=Frontiers in Ecology and Evolution |volume=7 |pages=Article 343 |doi=10.3389/fevo.2019.00343 |s2cid=202550199 |doi-access=free }}</ref>

{| class="wikitable sortable" align="center" width="100%"
|-
! Name !! Novelty !! Status !! Authors !! Age !! Type locality !! Country !! Notes !! Images
|-
| ''"Ceratotherium" advenientis''<ref>{{Cite journal|author1=Luca Pandolfi |author2=Antonella Cinzia Marra |author3=Giuseppe Carone |author4=Leonardo Maiorino |author5=Lorenzo Rook |year=2020 |title=A new rhinocerotid (Mammalia, Rhinocerotidae) from the latest Miocene of Southern Italy |journal=Historical Biology: An International Journal of Paleobiology |volume=33 |issue=2 |pages=194–208 |doi=10.1080/08912963.2019.1602615 |s2cid=150015826 }}</ref>
| Sp. nov
| Valid
| Pandolfi ''et al.''
| Late Miocene
| 
| {{Flag|Italy}}
| A rhinoceros. Announced in 2019; the final version of the article naming it was published in 2021.
|
|-
| ''Chowliia europea''<ref>{{cite journal |author1=Constance Bronnert |author2=Emmanuel Gheerbrant |author3=Marc Godinot |author4=Grégoire Métais |year=2019 |title=First European 'Isectolophidae' (Mammalia, Perissodactyla): ''Chowliia europea'', sp. nov., from the lower Eocene of Le Quesnoy, France |journal=Journal of Vertebrate Paleontology |volume=38 |issue=4 |pages=(1)–(9) |doi=10.1080/02724634.2018.1487448 |s2cid=109102098 }}</ref>
| Sp. nov
| Valid
| Bronnert ''et al.''
| Early Eocene
| 
| {{Flag|France}}
| An "[[Biology:Isectolophidae|isectolophid]]"
| 
|-
| ''Irenolophus''<ref>{{Cite journal|author1=Bin Bai |author2=Jin Meng |author3=Fang-Yuan Mao |author4=Zhao-Qun Zhang |author5=Yuan-Qing Wang |year=2019 |title=A new early Eocene deperetellid tapiroid illuminates the origin of Deperetellidae and the pattern of premolar molarization in Perissodactyla |journal=PLOS ONE |volume=14 |issue=11 |pages=e0225045 |doi=10.1371/journal.pone.0225045 |pmid=31703104 |pmc=6839866 |bibcode=2019PLoSO..1425045B |doi-access=free }}</ref>
| Gen. et sp. et comb. nov
| Valid
| Bai ''et al.''
| [[Earth:Eocene|Eocene]]
| Arshanto
| {{Flag|China}}
| A member of [[Biology:Tapiroidea|Tapiroidea]] belonging to the family [[Biology:Deperetellidae|Deperetellidae]]. The type species is ''I. qii''; genus also includes ''"Teleolophus" primarius'' Qi (1987).
| PLoS ONE
|-
| ''Pachynolophus ruscassierensis''<ref>{{cite journal |author1=Jean A. Remy |author2=Gabriel Krasovec |author3=Éric Lopez |author4=Bernard Marandat |author5=Fabrice Lihoreau |year=2019 |title=The Palaeotheriidae (Equoidea, Perissodactyla, Mammalia) from the Eocene fauna of Aumelas (Hérault department, France) |journal=Geodiversitas |volume=41 |issue=13 |pages=525–585 |doi=10.5252/geodiversitas2019v41a13 |s2cid=199873804 |url=http://sciencepress.mnhn.fr/en/periodiques/geodiversitas/41/13 |doi-access=free }}</ref>
| Sp. nov
| Valid
| Remy ''et al.''
| [[Earth:Eocene|Eocene]]
| 
| {{Flag|France}}
| A member of the family [[Biology:Palaeotheriidae|Palaeotheriidae]]
|
|-
| ''Plesiaceratherium balkanicum''<ref>{{cite journal |author1=Damien Becker |author2=Jérémy Tissier |year=2019 |title=Rhinocerotidae from the early middle Miocene locality Gračanica (Bugojno Basin, Bosnia-Herzegovina) |journal=Palaeobiodiversity and Palaeoenvironments |volume=100 |issue=2 |pages=395–412 |doi=10.1007/s12549-018-0352-1 |s2cid=133963909 }}</ref>
| Sp. nov
| Valid
| Becker & Tissier
| Miocene ([[Earth:European land mammal age|MN5]])
| Bugojno
| {{Flag|Bosnia and Herzegovina}}
| 
| 
|-
| ''[[Biology:Teleoceras|Teleoceras aepysoma]]''<ref>{{Cite journal|author1=Rachel A. Short |author2=Steven C. Wallace |author3=Laura G. Emmert |year=2019 |title=A new species of ''Teleoceras'' (Mammalia, Rhinocerotidae) from the late Hemphillian of Tennessee |journal=Bulletin of the Florida Museum of Natural History |volume=56 |issue=5 |pages=183–260 |url=https://www.floridamuseum.ufl.edu/files/3315/5638/4988/Vol56No5archive.pdf }}</ref>
| Sp. nov
| Valid
| Short, Wallace & Emmert
| Latest [[Biology:Hemphillian|Hemphillian]]
| Gray
| {{flag|United States}}<br />({{flag|Tennessee}})
| 
| 
|-
|}

===Even-toed ungulates===
* A study on the phylogenetic relationships and timing of the origin of [[Biology:Cetartiodactyla|Cetartiodactyla]] is published by Zurano ''et al.'' (2019).<ref>{{Cite journal|author1=Juan P. Zurano |author2=Felipe M. Magalhães |author3=Ana E. Asato |author4=Gabriel Silva |author5=Claudio J. Bidau |author6=Daniel O. Mesquita |author7=Gabriel C. Costa |year=2019 |title=Cetartiodactyla: updating a time-calibrated molecular phylogeny |journal=Molecular Phylogenetics and Evolution |volume=133 |pages=256–262 |doi=10.1016/j.ympev.2018.12.015 |pmid=30562611 }}</ref>
* A study on the teeth eruption pattern of a wide range of extinct cetartiodactyl families is published by Rodrigues ''et al.'' (2019).<ref>{{Cite journal|author1=Helder Gomes Rodrigues |author2=Fabrice Lihoreau |author3=Maëva Orliac |author4=J. G. M. Thewissen |author5=Jean-Renaud Boisserie |year=2019 |title=Unexpected evolutionary patterns of dental ontogenetic traits in cetartiodactyl mammals |journal=Proceedings of the Royal Society B: Biological Sciences |volume=286 |issue=1896 |pages=Article ID 20182417 |doi=10.1098/rspb.2018.2417 |pmid=30963938 |pmc=6408598 }}</ref>
* Description of an articulated postcranial skeleton of an oreodont from the [[Earth:Oligocene|Oligocene]] Tehuitzingo Formation, representing the first postcranial skeleton of an oreodont from Mexico reported so far, is published online by Ferrusquía-Villafranca & Ruiz-González (2019).<ref>{{Cite journal|author1=Ismael Ferrusquía-Villafranca |author2=José E. Ruiz-González |year=2019 |title=The first postcranial oreodont (Mammalia, Artiodactyla, Merycoidodontidae) skeleton from Mexico: Description and paleobiological significance |journal=Journal of South American Earth Sciences |volume=97 |pages=Article 102388 |doi=10.1016/j.jsames.2019.102388 }}</ref>
* New specimen of the fossil peccary ''Parachoerus carlesi'' is described from the Upper [[Earth:Pleistocene|Pleistocene]] of the Chaco Province of {{wipe|Argentina}} by Gasparini ''et al.'' (2019), representing the most complete fossil material of a member this species reported so far, and providing new information on the [[Biology:Morphology|morphology]] of the species and the environment it lived in.<ref>{{Cite journal|author1=Germán Mariano Gasparini |author2=Rodrigo Parisi Dutra |author3=Guillermo N. Lamenza |author4=Eduardo Pedro Tonni |author5=Agustín Ruella |year=2019 |title=''Parachoerus carlesi'' (Mammalia, Tayassuidae) in the Late Pleistocene (northern Argentina, South America): paleoecological and palaeobiogeographic considerations |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=8 |pages=1082–1088 |doi=10.1080/08912963.2017.1418340 |s2cid=90573957 }}</ref>
* A study on the paleobiology of the fossil peccary ''Platygonus compressus'', based on fossils from Bat Cave (Missouri, {{wipe|United States}}), is published by Woodruff & Schubert (2019).<ref>{{Cite journal|author1=Aaron L. Woodruff |author2=Blaine W. Schubert |year=2019 |title=Seasonal denning behavior and population dynamics of the late Pleistocene peccary ''Platygonus compressus'' (Artiodactyla: Tayassuidae) from Bat Cave, Missouri |journal=PeerJ |volume=7 |pages=e7161 |doi=10.7717/peerj.7161 |pmid=31308997 |pmc=6612422 }}</ref>
* A description of the skull anatomy of the fossil [[Biology:Suidae|suid]] ''[[Biology:Nyanzachoerus|Nyanzachoerus]] jaegeri'' based on new fossil material and a study on the phylogenetic relationships of the species is published by Reda, Lazagabaster & Haile-Selassie (2019).<ref>{{Cite journal|author1=Hailay G. Reda |author2=Ignacio A. Lazagabaster |author3=Yohannes Haile-Selassie |year=2019 |title=Newly discovered crania of ''Nyanzachoerus jaegeri'' (Tetraconodontinae, Suidae, Mammalia) from the Woranso-Mille (Ethiopia) and reappraisal of its generic status |journal=Journal of Mammalian Evolution |volume=26 |issue=2 |pages=179–199 |doi=10.1007/s10914-017-9398-5 |s2cid=27755239 }}</ref>
* New fossil suid specimens, providing new information on the classification and relationships of the Miocene [[Biology:Suinae|Suinae]] from China, are described from the latest Miocene site of Shuitangba (Zhaotong Basin, China) by Hou ''et al.'' (2019).<ref>{{Cite journal|author1=Sukuan Hou |author2=Denise F. Su |author3=Jay Kelley |author4=Tao Deng |author5=Nina G. Jablonski |author6=Lawrence J. Flynn |author7=Xueping Ji |author8=Jiayong Cao |author9=Xin Yang |year=2019 |title=New fossil suid specimens from the terminal Miocene hominoid locality of Shuitangba, Zhaotong, Yunnan Province, China |journal=Journal of Mammalian Evolution |volume=26 |issue=4 |pages=557–571 |doi=10.1007/s10914-018-9431-3 |s2cid=90790322 }}</ref>
* A study on the diet of Pliocene suids from the ''[[Biology:Australopithecus anamensis|Australopithecus anamensis]]'' site of Kanapoi and the ''[[Biology:Australopithecus afarensis|Australopithecus afarensis]]'' site of Hadar is published by Lazagabaster (2019).<ref>{{Cite journal|author=Ignacio A. Lazagabaster |year=2019 |title=Dental microwear texture analysis of Pliocene Suidae from Hadar and Kanapoi in the context of early hominin dietary breadth expansion |journal=Journal of Human Evolution |volume=132 |pages=80–100 |doi=10.1016/j.jhevol.2019.04.010 |pmid=31203853 }}</ref>
* Description of deer fossils from the Pleistocene localities in Buenos Aires Province ({{wipe|Argentina}}), including the southernmost record of the genus ''[[Biology:Morenelaphus|Morenelaphus]]'' and the species ''M. lujanensis'', is published by Chimento ''et al.'' (2019).<ref>{{Cite journal|author1=Nicolás Roberto Chimento |author2=José Ignacio Zuccari |author3=José María Marchetto |author4=Lorena Berbach |year=2019 |title=New remains of deers (Cervidae, Mammalia) of the Pleistocene from the Pampean Region (Argentina): paleobiogeographic and paleoecological considerations |journal=Revista Brasileira de Paleontologia |volume=22 |issue=1 |pages=67–85 |doi=10.4072/rbp.2019.1.06 |doi-access=free }}</ref>
* A systematic, macroscopic, [[Physics:Radiography|radiographic]], and [[Biology:Histology|histologic]] study of the fossil bones of the Cretan deer ''[[Biology:Candiacervus|Candiacervus]]'' will be published by Lyras ''et al.'' (2019), who interpret their findings as indicative of the occurrence of a metabolic bone disease in the Cretan deer population, probably caused by habitat degradation.<ref>{{Cite journal|author1=George A. Lyras |author2=Aggeliki Giannakopoulou |author3=Theodoros Lillis |author4=Alexandra A.E. van der Geer |year=2019 |title=Paradise lost: Evidence for a devastating metabolic bone disease in an insular Pleistocene deer |journal=International Journal of Paleopathology |volume=24 |pages=213–226 |doi=10.1016/j.ijpp.2018.12.003 |pmid=30572299 }}</ref>
* New fossil material of ''[[Biology:Eucladoceros|Eucladoceros]] boulei'', providing new information on the anatomy of this species, is described from the Shanshenmiaozui site in the Nihewan Basin (China) by Tong & Zhang (2019).<ref>{{Cite journal|author1=Hao-Wen Tong |author2=Bei Zhang |year=2019 |title=New fossils of ''Eucladoceros boulei'' (Artiodactyla, Mammalia) from Early Pleistocene Nihewan Beds, China |journal=Palaeoworld |volume=28 |issue=3 |pages=403–424 |doi=10.1016/j.palwor.2019.05.003 }}</ref>
* A study comparing the characteristics of the postcranial skeletons of ''Arvernoceros ardei'' and ''Cervus perrieri'' is published online by Pfeiffer-Deml (2019).<ref>{{Cite journal|author=Thekla Pfeiffer-Deml |year=2019 |title=Distinction of ''Arvernoceros ardei'' and ''Cervus perrieri'' (Cervidae, Mammalia) from the late Pliocene site of Perrier (France) based on the postcranial skeleton: taxonomic and phylogenetic conclusions |journal=PalZ |volume=94 |issue=2 |pages=377–408 |doi=10.1007/s12542-019-00473-y |s2cid=199474572 }}</ref>
* A study on the age and [[Morphometrics|morphometrics]] of a partial fossil caribou [[Biology:Antler|antler]] from Graham Island ({{wipe|Canada}}) is published by Mathewes, Richards & Reimchen (2019).<ref>{{Cite journal|author1=Rolf W. Mathewes |author2=Michael Richards |author3=Thomas E. Reimchen |s2cid=135409724 |year=2019 |title=Late Pleistocene age, size, and paleoenvironment of a caribou antler from Haida Gwaii, British Columbia |journal=Canadian Journal of Earth Sciences |volume=56 |issue=6 |pages=688–692 |doi=10.1139/cjes-2018-0246 |bibcode=2019CaJES..56..688M }}</ref>
* A study on the [[Biology:Ontogeny|ontogenetic]] variation of the [[Biology:Antler|antler]]s of the Yabe's giant deer (''[[Biology:Sinomegaceros|Sinomegaceros yabei]]'') reported from all over {{wipe|Japan}} is published by Taruno, Okumura & Ishida (2019).<ref>{{cite journal|author1=Hiroyuki Taruno|author2=Kiyoshi Okumura|author3=Shinogu Ishida|year=2019|title=Antler morphology of the Yabe's giant deer – revision based on their ontogenetic variation|journal=Bulletin of the Osaka Museum of Natural History|language=ja|volume=73|pages=37–58|doi=10.20643/00001334}}</ref>
* A study on the pattern of extinction of the [[Biology:Irish elk|Irish elk]], as indicated by radiocarbon data from fossil specimens from western and eastern Europe, is published by Lister & Stuart (2019).<ref>{{Cite journal|author1=Adrian M. Lister |author2=Anthony J. Stuart |year=2019 |title=The extinction of the giant deer ''Megaloceros giganteus'' (Blumenbach): New radiocarbon evidence |journal=Quaternary International |volume=500 |pages=185–203 |doi=10.1016/j.quaint.2019.03.025 |bibcode=2019QuInt.500..185L |doi-access=free }}</ref>
* A study testing whether the antlers of the Irish elk could have withstood forces generated during fighting is published by Klinkhamer ''et al.'' (2019).<ref>{{Cite journal|author1=Ada J. Klinkhamer |author2=Nicholas Woodley |author3=James M. Neenan |author4=William C. H. Parr |author5=Philip Clausen |author6=Marcelo R. Sánchez-Villagra |author7=Gabriele Sansalone |author8=Adrian M. Lister |author9=Stephen Wroe |year=2019 |title=Head to head: the case for fighting behaviour in ''Megaloceros giganteus'' using finite-element analysis |journal=Proceedings of the Royal Society B: Biological Sciences |volume=286 |issue=1912 |pages=Article ID 20191873 |doi=10.1098/rspb.2019.1873 |pmid=31594504 |pmc=6790765 }}</ref>
* A mandible of the giant muntjac (''Muntiacus gigas'', considered by the authors to be synonymous with ''M. vuquangensis'') is described from the Late Pleistocene to Early Holocene deposits in the cave site of Hang Boi (Vietnam) by Stimpson ''et al.'' (2019).<ref>{{Cite journal|author1=C. M. Stimpson |author2=B. Utting  |author3=S. O'Donnell |author4=N. T. M. Huong |author5=T. Kahlert |author6=B. V. Manh |author7=P. S. Khanh |author8=R. J. Rabett |year=2019 |title=An 11 000-year-old giant muntjac subfossil from Northern Vietnam: implications for past and present populations |journal=Royal Society Open Science |volume=6 |issue=3 |pages=Article ID 181461 |doi=10.1098/rsos.181461 |pmid=31032005 |pmc=6458398 |bibcode=2019RSOS....681461S }}</ref>
* A study on the diet of the late Pleistocene Indian muntjacs from Sumatra, as indicated by data from fossil teeth from cave sites of Lida Ajer, Sibrambang and Jambu, is published by Wirkner & Hertler (2019).<ref>{{Cite journal|author1=Mathias Wirkner |author2=Christine Hertler |year=2019 |title=Feeding ecology of late Pleistocene ''Muntiacus muntjak'' in the Padang Highlands (Sumatra) |journal=Comptes Rendus Palevol |volume=18 |issue=5 |pages=541–554 |doi=10.1016/j.crpv.2019.03.004 |doi-access=free }}</ref>
* A study on the long- and short-term dietary behavior of the Miocene [[Biology:Moschidae|moschids]] ''[[Biology:Micromeryx|Micromeryx]] flourensianus'' and ''M.? eiselei'', as indicated by data from tooth wear, is published by Aiglstorfer & Semprebon (2019).<ref>{{Cite journal|author1=Manuela Aiglstorfer |author2=Gina M. Semprebon |year=2019 |title=Hungry for fruit? – A case study on the ecology of middle Miocene Moschidae (Mammalia, Ruminantia) |journal=Geodiversitas |volume=41 |issue=10 |pages=385–399 |doi=10.5252/geodiversitas2019v41a10 |s2cid=182534548 |url=http://sciencepress.mnhn.fr/en/periodiques/geodiversitas/41/10 |doi-access=free }}</ref>
* A revision of putative fossil material of ''[[Biology:Lagomeryx|Lagomeryx]]'' reported from the Miocene locality Ulan Tolgoi (Loh Formation; Mongolia) is published by Mennecart ''et al.'' (2019), who reinterpret this material of fossils of a moschid, representing the first Miocene moschid remains from Mongolia.<ref>{{cite journal |author1=Bastien Mennecart |author2=Manuela Aiglstorfer |author3=Ursula B. Göhlich |author4=Gudrun Daxner-Höck |year=2019 |title=On the oldest Mongolian moschids (Mammalia, Ruminantia) and the early moschid evolution |journal=Palaeontologia Electronica |volume=22 |issue=2 |pages=Article number 22.2.53 |doi=10.26879/959 |doi-access=free }}</ref>
* Description of new specimens of ''Sardomeryx oschiriensis'' from the Miocene ([[Earth:Burdigalian|Burdigalian]]) of Sardinia (Italy) and a study on the phylogenetic relationships of this species is published by Mennecart ''et al.'' (2019).<ref>{{Cite journal|author1=Bastien Mennecart |author2=Daniel Zoboli |author3=Loïc Costeur |author4=Gian Luigi Pillola |year=2019 |title=On the systematic position of the oldest insular ruminant ''Sardomeryx oschiriensis'' (Mammalia, Ruminantia) and the early evolution of the Giraffomorpha |journal=Journal of Systematic Palaeontology |volume=17 |issue=8 |pages=691–704 |doi=10.1080/14772019.2018.1472145 |s2cid=90166259 }}</ref>
* The first detailed description of the [[Biology:Giraffidae|giraffid]] species ''Schansitherium tafeli'' is published by Hou ''et al.'' (2019), who compare this taxon with ''[[Biology:Samotherium|Samotherium]] boissieri''.<ref>{{Cite journal|author1=Sukuan Hou |author2=Michael Cydylo |author3=Melinda Danowitz |author4=Nikos Solounias |year=2019 |title=Comparisons of ''Schansitherium tafeli'' with ''Samotherium boissieri'' (Giraffidae, Mammalia) from the Late Miocene of Gansu Province, China |journal=PLOS ONE |volume=14 |issue=2 |pages=e0211797 |doi=10.1371/journal.pone.0211797 |pmid=30753231 |pmc=6376930 |bibcode=2019PLoSO..1411797H |doi-access=free }}</ref>
* Description of an almost complete skull and a second partial skull of ''[[Biology:Bohlinia|Bohlinia]] attic'' from the late Miocene of Maragheh ([[Religion:Iran|Iran]]), as well as a complete upper dentition of a member of this species from Samos (Greece), is published by Parizad ''et al.'' (2019).<ref>{{Cite journal|author1=Elnaz Parizad |author2=Majid Mirzaie Ataabadi |author3=Marjan Mashkour |author4=Nikos Solounias |year=2019 |title=First giraffid skulls (''Bohlinia attica'') from the late Miocene Maragheh fauna, Northwest Iran |journal=Geobios |volume=53 |pages=23–34 |doi=10.1016/j.geobios.2019.02.007 }}</ref>
* New skull remains of ''[[Biology:Decennatherium|Decennatherium]] rex'' are described from the late Miocene (Vallesian) Batallones-4 site (Cerro de los Batallones fossil site complex, {{wipe|Spain}}) by Ríos & Morales (2019).<ref>{{cite journal |author1=María Ríos |author2=Jorge Morales |year=2019 |title=A new skull of ''Decennatherium rex'' Ríos, Sánchez and Morales, 2017 from Batallones-4 (upper Vallesian, MN10, Madrid, Spain) |journal=Palaeontologia Electronica |volume=22 |issue=2 |pages=Article number 22.2.vpc_1 |doi=10.26879/965 |doi-access=free }}</ref>
* A revision of giraffid fossils from the late Miocene of the Thermopigi site (Greece) is published by Xafis ''et al.'' (2019).<ref>{{cite journal |author1=Alexandros Xafis |author2=Evangelia Tsoukala |author3=Nikos Solounias |author4=Oleg Mandic |author5=Mathias Harzhauser |author6=Friðgeir Grímsson |author7=Doris Nagel |year=2019 |title=Fossil Giraffidae (Mammalia, Artiodactyla) from the late Miocene of Thermopigi (Macedonia, Greece) |journal=Palaeontologia Electronica |volume=22 |issue=3 |pages=Article number 22.3.67 |doi=10.26879/889 |doi-access=free }}</ref>
* A study on the evolution of [[Earth:Neogene|Neogene]] [[Biology:Bovidae|bovids]] from central Myanmar is published by Nishioka ''et al.'' (2019), who also describe new [[Biology:Caprinae|caprine]] and [[Biology:Bovinae|bovine]] specimens from the upper Miocene to Pliocene part of the Irrawaddy beds.<ref>{{Cite journal|author1=Yuichiro Nishioka |author2=Masanaru Takai |author3=Takehisa Tsubamoto |author4=Naoko Egi |author5=Takeshi Nishimura |author6=Reiko Kono |author7=Shinkai Ogino |author8=Thaung-Htike |author9=Zin-Maung-Maung-Thein |author10=Chavalit Vidthayanon |year=2019 |title=Bovidae (Mammalia, Artiodactyla) from the Neogene Irrawaddy beds, Myanmar |journal=Palaeontographica Abteilung A |volume=314 |issue=1–3 |pages=11–68 |doi=10.1127/pala/2019/0088 |url= https://www.schweizerbart.de/papers/pala/detail/314/91604/}}</ref>
* Description of new fossil material of ''[[Biology:Leptobos|Leptobos]] merlai'' from the early late Villafranchian of Umbria (Italy), providing new information on the anatomy of this species, is published by Cherin, D'Allestro & Masini (2019).<ref>{{cite journal |author1=Marco Cherin |author2=Vittorio D'Allestro |author3=Federico Masini |year=2019 |title=New bovid remains from the Early Pleistocene of Umbria (Italy) and a reappraisal of ''Leptobos merlai'' |journal=Journal of Mammalian Evolution |volume=26 |issue=2 |pages=201–224 |doi=10.1007/s10914-017-9421-x |s2cid=27349875 }}</ref>
* Description of new fossil remains of spiral horned antelope ''Spirocerus wongi'' from Nihewan Formation (Shanxi, {{wipe|China}}) and a study on the taxonomy and phylogenetic relationships of the genus ''Spirocerus'' is published by Bai ''et al.'' (2019).<ref>{{Cite journal|author1=Weipeng Bai |author2=Wei Dong |author3=Limin Zhang |author4=Qi Wei |author5=Wenhui Liu |author6=Zheying Chen |year=2019 |title=New material of the Early Pleistocene spiral horned antelope ''Spirocerus'' (Artiodactyla, Mammalia) from North China and discussion on its evolution |journal=Quaternary International |volume=522 |pages=94–102 |doi=10.1016/j.quaint.2019.06.029 |bibcode=2019QuInt.522...94B }}</ref>
* New fossil material of the [[Biology:Crown group#Stem groups|stem]]-caprine species ''Olonbulukia tsaidamensis'' is described from the Wuzhong region of northern {{wipe|China}} by Wang ''et al.'' (2019), who also revise fossil stem-caprine taxa from the Wuzhong Fauna and so-called "Qaidam Fauna".<ref>{{Cite journal|author1=Shi-Qi Wang |author2=Qing Yang |author3=Ya Zhao |author4=Chun-Xiao Li |author5=Qin-Qin Shi |author6=Li-Yi Zong |author7=Jie Ye |year=2019 |title=New ''Olonbulukia'' material and its related assemblage reveal an early radiation of stem Caprini along the north of the Tibetan Plateau |journal=Journal of Paleontology |volume=93 |issue=2 |pages=385–397 |doi=10.1017/jpa.2018.65 |s2cid=133846271 }}</ref>
* A study on past distribution of the long-tailed goral and causes of its range shift over time, based on data from fossil specimens from the [[Earth:Paleolithic|Paleolithic]] sites, is published by Kim ''et al.'' (2019).<ref>{{Cite journal|author1=Da Bin Kim |author2=Kyung Ah Koo |author3=Hyun Hee Kim |author4=Ga Young Hwang |author5=Woo Seok Kong |year=2019 |title=Reconstruction of the habitat range suitable for long-tailed goral (''Naemorhedus caudatus'') using fossils from the Paleolithic sites |journal=Quaternary International |volume=519 |pages=101–112 |doi=10.1016/j.quaint.2019.05.021 |bibcode=2019QuInt.519..101K }}</ref>
* New specimen of ''[[Biology:Bubalus murrensis|Bubalus murrensis]]'', representing the westernmost occurrence of this species, is described from Médoc ({{wipe|France}}) by Koenigswald ''et al.'' (2019).<ref>{{Cite journal|author1=Wighart v. Koenigswald |author2=Achim H. Schwermann |author3=Mark Keiter |author4=Frank Menger |year=2019 |title=First evidence of Pleistocene ''Bubalus murrensis'' in France and the stratigraphic occurrences of ''Bubalus'' in Europe |journal=Quaternary International |volume=522 |pages=85–93 |doi=10.1016/j.quaint.2019.06.019 |bibcode=2019QuInt.522...85K }}</ref>
* A study on the paleoecology of Northern Great Plains bisons from the late [[Earth:Pleistocene|Pleistocene]] and throughout the [[Earth:Holocene|Holocene]], based on carbon and nitrogen isotope data from bison specimens from 22 archaeological sites across the Northern Great Plains, is published by Davies ''et al.'' (2019).<ref>{{Cite journal|author1=Gaimi Davies |author2=Blake McCann |author3=Jay Sturdevant |author4=Fern Swenson |author5=Igor V. Ovchinnikov |year=2019 |title=Isotopic paleoecology of Northern Great Plains bison during the Holocene |journal=Scientific Reports |volume=9 |issue=1 |pages=Article number 16637 |doi=10.1038/s41598-019-52873-4 |pmid=31719547 |pmc=6851189 |bibcode=2019NatSR...916637D }}</ref>
* [[Biology:Entelodont|Entelodont]]id teeth are described from the late [[Earth:Eocene|Eocene]] of the Krabi coal mine in southern Thailand by Ducrocq, Chaimanee & Jaeger (2019), representing the southernmost occurrence of entelodontids in Asia during the [[Earth:Paleogene|Paleogene]] reported so far.<ref>{{Cite journal|author1=Stéphane Ducrocq |author2=Yaowalak Chaimanee |author3=Jean-Jacques Jaeger |year=2019 |title=First record of Entelodontidae (Mammalia, Artiodactyla) from the late Eocene of Southeast Asia |journal=Comptes Rendus Palevol |volume=18 |issue=2 |pages=186–190 |doi=10.1016/j.crpv.2018.10.001 |doi-access=free }}</ref>
* An upper molar of the [[Biology:Anthracotheriidae|anthracothere]] ''Sivameryx palaeindicus'' is described from the early Miocene Kamus Junction site ([[Place:Israel|Israel]]) by Grossman ''et al.'' (2019).<ref>{{Cite journal|author1=Ari Grossman |author2=Ran Calvo |author3=Raquel López-Antoñanzas |author4=Fabien Knoll |author5=Gideon Hartman |author6=Rivka Rabinovich |year=2019 |title=First record of ''Sivameryx'' (Cetartiodactyla, Anthracotheriidae) from the lower Miocene of Israel highlights the importance of the Levantine Corridor as a dispersal route between Eurasia and Africa |journal=Journal of Vertebrate Paleontology |volume=39 |issue=2 |pages=e1599901 |doi=10.1080/02724634.2019.1599901 |s2cid=155302108 |url=https://hal.archives-ouvertes.fr/hal-02365607/file/Grossman%20et%20al%202019.pdf }}</ref>
* A study on the paleoecology of Pleistocene Mediterranean [[Biology:Insular dwarfism|dwarf]] hippos is published by Bethune ''et al.'' (2019).<ref>{{Cite journal|author1=Elehna Bethune |author2=Thomas M. Kaiser |author3=Ellen Schulz-Kornas |author4=Daniela E. Winkler |year=2019 |title=Multiproxy dietary trait reconstruction in Pleistocene Hippopotamidae from the Mediterranean islands |journal=Palaeogeography, Palaeoclimatology, Palaeoecology |volume=533 |pages=Article 109210 |doi=10.1016/j.palaeo.2019.05.032 |bibcode=2019PPP...533j9210B |url=https://zenodo.org/record/3248597 }}</ref>
* The first directly dated fossil of a member of the genus ''[[Biology:Hexaprotodon|Hexaprotodon]]'' (an upper right [[Biology:Canine tooth|canine]] fragment) from the Narmada Valley of Central {{wipe|India}} is described by Jukar ''et al.'' (2019), who also present a tentative extinction chronology of ''Hexaprotodon'', indicating that this genus survived into the Early [[Earth:Holocene|Holocene]].<ref>{{Cite journal|author1=Advait M. Jukar |author2=Rajeev Patnaik |author3=Parth R. Chauhan |author4=Hong-Chun Li |author5=Jih-Pai Lin |year=2019 |title=The youngest occurrence of ''Hexaprotodon'' Falconer and Cautley, 1836 (Hippopotamidae, Mammalia) from South Asia with a discussion on its extinction |journal=Quaternary International |volume=528 |pages=130–137 |doi=10.1016/j.quaint.2019.01.005 |bibcode=2019QuInt.528..130J }}</ref>
* Putative [[Biology:Helohyidae|helohyids]] ''Pakkokuhyus'' and ''Progenitohyus'' are transferred to the family [[Biology:Dichobunidae|Dichobunidae]] by Ducrocq (2019).<ref>{{Cite journal|author=Stéphane Ducrocq |year=2019 |title=''Pakkokuhyus'' and ''Progenitohyus'' (Artiodactyla, Mammalia) from the Eocene of Southeast Asia are not Helohyidae: paleobiogeographical implications |journal=PalZ |volume=93 |issue=1 |pages=105–113 |doi=10.1007/s12542-018-0425-5 |s2cid=134077215 }}</ref>

{| class="wikitable sortable" align="center" width="100%"
|-
! Name
! Novelty
! Status
! Authors
! Age
! Type locality
! Country
! Notes
! Images
|-
|
''Cervus canadensis combrayicus''<ref>{{cite journal |author=Roman Croitor |year=2020 |title=A new form of wapiti ''Cervus canadensis'' Erxleben, 1777 (Cervidae, Mammalia) from the Late Pleistocene of France |journal=Palaeoworld |volume=29 |issue=4 |pages=789–806 |doi=10.1016/j.palwor.2019.12.001 |s2cid=213500978 }}</ref>
|
Subsp. nov
|
Valid
|
Croitor
|
Late [[Earth:Pleistocene|Pleistocene]]
|
|
{{Flag|France}}
|
A subspecies of the [[Biology:Elk|elk]]. Announced in 2019; the final version of the article naming it was published in 2020.
|
|-
|
''[[Biology:Decennatherium|Decennatherium asiaticum]]''<ref>{{Cite journal|author1=Maria Rios |author2=Melinda Danowitz |author3=Nikos Solounias |year=2019 |title=First identification of ''Decennatherium'' Crusafont, 1952 (Mammalia, Ruminantia, Pecora) in the Siwaliks of Pakistan |journal=Geobios |volume=57 |pages=97–110 |doi=10.1016/j.geobios.2019.10.007 }}</ref>
|
Sp. nov
|
Valid
|
Rios, Danowitz & Solounias
|
Late Miocene
|
|
{{Flag|Pakistan}}
|
|
|-
|
''[[Biology:Dorcatherium|Dorcatherium dehmi]]''<ref>{{Cite journal|author1=Jonathan A. Guzmán-Sandoval |author2=Gertrud E. Rössner |year=2019 |title=Miocene chevrotains (Mammalia, Artiodactyla, Tragulidae) from Pakistan |journal=Historical Biology: An International Journal of Paleobiology |volume=33 |issue=6 |pages=743–776 |doi=10.1080/08912963.2019.1661405 |s2cid=209595838 }}</ref>
|
Sp. nov
|
Valid
|
Guzmán-Sandoval & Rössner
|
Miocene
|
|
{{Flag|Pakistan}}
|
A [[Biology:Chevrotain|chevrotain]].
|
|-
|
''Elaphurus davidianus predavidianus''<ref>{{cite journal |author1=Wei Dong |author2=Qi Wei |author3=Weipeng Bai |author4=Limin Zhang |author5=Wenhui Liu |author6=Zheying Chen |author7=Yongbing Bai |author8=Yongchun Wu |year=2019 |title=New material of the Early Pleistocene ''Elaphurus'' (Artiodactyla, Mammalia) from North China and discussion on taxonomy of ''Elaphurus'' |journal=Quaternary International |volume=519 |pages=113–121 |doi=10.1016/j.quaint.2018.05.015 |bibcode=2019QuInt.519..113D }}</ref>
|
Subsp. nov
|
Valid
|
Dong ''et al.''
|
Early [[Earth:Pleistocene|Pleistocene]]
|
Nihewan Formation
|
{{Flag|China}}
|
A subspecies of the [[Biology:Père David's deer|Père David's deer]].
|
|-
|
''[[Biology:Hispanomeryx|Hispanomeryx lacetanus]]''<ref>{{cite journal |author1=Israel M. Sánchez |author2=Daniel Demiguel |author3=Sergio Almécija |author4=Salvador Moyà-Solà |author5=Jorge Morales |author6=David M. Alba |year=2019 |title=New ''Hispanomeryx'' (Mammalia, Ruminantia, Moschidae) from Spain and a reassessment of the systematics and paleobiology of the genus ''Hispanomeryx'' Morales, Moyà-Solà, and Soria, 1981 |journal=Journal of Vertebrate Paleontology |volume=39 |issue=2 |pages=e1602536 |doi=10.1080/02724634.2019.1602536 |s2cid=196661101 }}</ref>
|
Sp. nov
|
Valid
|
Sánchez ''et al.''
|
Miocene (Vallesian)
|
|
{{Flag|Spain}}
|
A member of the family [[Biology:Moschidae|Moschidae]].
|
|-
|
''[[Biology:Kubanochoerus|Kubanochoerus parvus]]''<ref>{{cite journal |author1=Su-Kuan Hou |author2=Tao Deng |year=2019 |title=A new species of ''Kubanochoerus'' (Suidae, Artiodactyla) from the Linxia Basin, Gansu Province, China |journal=Vertebrata PalAsiatica |volume=57 |issue=2 |pages=155–172 |doi=10.19615/j.cnki.1000-3118.180402 }}</ref>
|
Sp. nov
|
Valid
|
Hou & Deng
|
Latest Middle or earliest Late Miocene
|
|
{{Flag|China}}
|
A member of the family [[Biology:Suidae|Suidae]] belonging to the subfamily [[Biology:Listriodontinae|Listriodontinae]].
|
|-
|
''Kubwachoerus''<ref name=Kubwachoerus>{{Cite book |author1=Martin Pickford |author2=Hiroshi Tsujikawa |year=2019 |title=Revision of African Kubanochoerinae (Suidae: Mammalia) with descriptions of new fossils from the Middle Miocene Aka Aiteputh Formation, Nachola, Kenya |journal=Münchner Geowissenschaftliche Abhandlungen Reihe A: Geologie und Paläontologie |volume=48 |pages=1–105 |isbn=978-3-89937-248-9 }}</ref>
|
Gen. et comb. et sp. nov
|
Valid
|
Pickford & Tsujikawa
|
Miocene
|
Aka Aiteputh Formation
|
{{Flag|Kenya}}<br />
{{Flag|Libya}}
|
A member of the family [[Biology:Suidae|Suidae]] related to ''Kubanochoerus''. Genus includes ''K. khinzikebirus'' (Wilkinson, 1976) and ''K. marymuunguae'' (Van der Made, 1996), as well as a new species ''K. nyakachensis''.
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|-
|
''[[Biology:Megaloceros|Megaloceros matritensis]]''<ref>{{cite journal |author=Jan van der Made |year=2019 |title=The dwarfed "giant deer" ''Megaloceros matritensis'' n.sp. from the Middle Pleistocene of Madrid - A descendant of ''M. savini'' and contemporary to ''M. giganteus'' |journal=Quaternary International |volume=520 |pages=110–139 |doi=10.1016/j.quaint.2018.06.006 |bibcode=2019QuInt.520..110V }}</ref>
|
Sp. nov
|
Valid
|
Van der Made
|
Middle [[Earth:Pleistocene|Pleistocene]]
|
|
{{Flag|Spain}}
|
|
|-
|
''[[Biology:Palaeochoerus|Palaeochoerus australis]]''<ref name=Kubwachoerus />
|
Sp. nov
|
Valid
|
Pickford & Tsujikawa
|
Miocene
|
|
{{Flag|Namibia}}
|
A member of the family [[Biology:Suidae|Suidae]].
|
|-
|
''Palaeoryx minor''<ref>{{cite journal |author1=Nikolaos Vasileiadis |author2=Evangelia Tsoukala |author3=Dimitris S. Kostopoulos |year=2019 |title=The late Miocene bovids from Platania (Drama Basin, Greece), with description of a new species of ''Paleoryx'' |journal=Geobios |volume=55 |pages=57–76 |doi=10.1016/j.geobios.2019.06.005 }}</ref>
|
Sp. nov
|
Valid
|
Vasileiadis, Tsoukala & Kostopoulos
|
Late Miocene
|
|
{{Flag|Greece}}
|
A [[Biology:Bovidae|bovid]].
|
|-
|
''Qurliqnoria chorakensis''<ref>{{cite journal |author1=Dimitris S. Kostopoulos |author2=Ayla Sevim Erol |author3=Serdar Mayda |author4=Alper Yener Yavuz |author5=Erhan Tarhan |year=2020 |title=''Qurliqnoria'' (Bovidae, Mammalia) from the Upper Miocene of Çorakyerler (Central Anatolia, Turkey) and its biogeographic implications |journal=Palaeoworld |volume=29 |issue=3 |pages=629–635 |doi=10.1016/j.palwor.2019.10.003 }}</ref>
|
Sp. nov
|
Valid
|
Kostopoulos ''et al.''
|
Late Miocene
|
|
{{Flag|Turkey}}
|
A [[Biology:Crown group#Stem groups|stem]]-[[Biology:Caprinae|caprine]] [[Biology:Bovidae|bovid]]. Announced in 2019; the final version of the article naming it was published in 2020.
|
|-
|}

===Cetaceans===
* A review of the [[Earth:Eocene|Eocene]] fossil record of cetaceans from [[Earth:Antarctica|Antarctica]] is published by Buono ''et al.'' (2019).<ref>{{cite journal |author1=Mónica R. Buono |author2=R. Ewan Fordyce |author3=Felix G. Marx |author4=Marta S. Fernández |author5=Marcelo A. Reguero |year=2019 |title=Eocene Antarctica: a window into the earliest history of modern whales |journal=Advances in Polar Science |volume=30 |issue=3 |pages=293–302 |doi=10.13679/j.advps.2019.0005 }}</ref>
* Partial skeleton of an [[Biology:Archaeoceti|archaeocete]] is described from the [[Earth:Paleogene|Paleogene]] [[Earth:Tongeren Formation|Tongeren Formation]] (the Netherlands) by van Vliet ''et al.'' (2019).<ref>{{Cite journal|author1=Henk Jan van Vliet |author2=Olivier Lambert |author3=Mark Bosselaers |author4=Anne S. Schulp |author5=John W.M. Jagt |year=2019 |title=A Palaeogene cetacean from Maastricht, southern Limburg (The Netherlands) |journal=Cainozoic Research |volume=19 |issue=1 |pages=95–113 }}</ref>
* New [[Biology:Protocetidae|protocetid]] fossils, including a nearly complete articulated forelimb providing new information on the locomotion and forelimb evolution of early cetaceans, are described from the upper [[Earth:Lutetian|Lutetian]] of Senegal by Vautrin ''et al.'' (2019).<ref>{{Cite journal|author1=Quentin Vautrin |author2=Fabrice Lihoreau |author3=Bernard Sambou |author4=Moustapha Thiam |author5=Jeremy E. Martin |author6=Rodolphe Tabuce |author7=Sylvain Adnet |author8=Renaud Lebrun |author9=Anne‐Lise Charruault |author10=Raphaël Sarr |author11=Lionel Hautier |year=2019 |title=From limb to fin: an Eocene protocetid forelimb from Senegal sheds new light on the early locomotor evolution of cetaceans |journal=Palaeontology |volume=63 |issue=1 |pages=51–66 |doi=10.1111/pala.12442 |doi-access=free }}</ref>
* A study on the evolution of the [[Medicine:Ossicles|ossicles]] in early cetaceans, as indicated by data from a partially complete ossicular chain of a protocetid specimen collected in Eocene ([[Earth:Lutetian|Lutetian]]) phosphate deposits at Kpogamé (Togo), is published by Mourlam & Orliac (2019).<ref>{{Cite journal|author1=Mickaël J. Mourlam |author2=Maeva J. Orliac |year=2019 |title=Early evolution of the ossicular chain in Cetacea: into the middle ear gears of a semi-aquatic protocetid whale |journal=Proceedings of the Royal Society B: Biological Sciences |volume=286 |issue=1912 |pages=Article ID 20191417 |doi=10.1098/rspb.2019.1417 |pmid=31575370 |pmc=6790766 }}</ref>
* A study on the anatomy of the olfactory and respiratory turbinates of ''[[Biology:Aegyptocetus|Aegyptocetus]] tarfa'' is published online by Peri ''et al.'' (2019).<ref>{{cite journal |author1=Emanuele Peri |author2=Philip D. Gingerich |author3=Giacomo Aringhieri |author4=Giovanni Bianucci |year=2019 |title=Reduction of olfactory and respiratory turbinates in the transition of whales from land to sea: the semiaquatic middle Eocene ''Aegyptocetus tarfa'' |journal=Journal of Anatomy |volume=236 |issue=1 |pages=98–104 |doi=10.1111/joa.13088 |pmid=31498900 |pmc=6904701 |pmc-embargo-date=January 1, 2022 }}</ref>
* A study on the [[Biology:Morphology|morphology]] of teeth and [[Biology:Tooth enamel|enamel]] microstructure of two fossil cetaceans from Antarctica (a [[Biology:Basilosauridae|basilosaurid]] from the [[Earth:La Meseta Formation|La Meseta Formation]] and a member of the genus ''[[Biology:Llanocetus|Llanocetus]]'' from the Submeseta Formation) is published online by Loch ''et al.'' (2019).<ref>{{Cite journal|author1=Carolina Loch |author2=Monica R. Buono |author3=Daniela C. Kalthoff |author4=Thomas Mörs |author5=Marta S. Fernández |year=2019 |title=Enamel microstructure in Eocene cetaceans from Antarctica (Archaeoceti and Mysticeti) |journal=Journal of Mammalian Evolution |volume=27 |issue=2 |pages=289–298 |doi=10.1007/s10914-018-09456-3 |s2cid=58014588 }}</ref>
* Partly preserved tail vertebra of a basilosaurid is described from the [[Earth:Eocene|Eocene]] Cajaruro Formation (Peru) by Davydenko, Laime & Gol'din (2019), representing the first record of an Eocene marine mammal from the northwestern Amazon region.<ref>{{Cite journal|author1=Svitozar Davydenko |author2=Manuel J. Laime |author3=Pavel Gol'din |year=2019 |title=The earliest record of a marine mammal (Cetacea: Basilosauridae) from the Eocene of the Amazonia |journal=Journal of Vertebrate Paleontology |volume=38 |issue=6 |pages=e1549060 |doi=10.1080/02724634.2018.1549060 |s2cid=91553252 }}</ref>
* The discovery of over a hundred basilosaurid specimens from the middle to upper Eocene Gehannam and Birket Qaroun formation ([[Biology:Wadi El Hitan|Wadi El Hitan]], [[Place:Egypt|Egypt]]) is reported by Mahdy ''et al.'' (2019), who also compare the anatomy and habitat of ''[[Biology:Dorudon|Dorudon]] atrox'' and extant [[Biology:Killer whale|killer whale]].<ref>{{Cite journal|author1=A. Mahdy |author2=G. Abu El-Kheir |author3=Abdullah S. Gohar |author4=Maher I. El-Soughier |year=2019 |title=Palaeobiological assessment of some basilosaurid archaeocetes (Mammalia, Cetacea) and its affinity with recent odontocetes: new insights from Wadi El-Hitan, Fayoum, Egypt |journal=Historical Biology: An International Journal of Paleobiology |volume=33 |issue=3 |pages=313–322 |doi=10.1080/08912963.2019.1616292 |s2cid=181399367 }}</ref>
* A study on the stomach contents of a new specimen of ''[[Biology:Basilosaurus|Basilosaurus]] isis'' from Wadi Al Hitan in [[Place:Egypt|Egypt]] is published by Voss ''et al.'' (2019).<ref>{{Cite journal|author1=Manja Voss |author2=Mohammed Sameh M. Antar |author3=Iyad S. Zalmout |author4=Philip D. Gingerich |year=2019 |title=Stomach contents of the archaeocete ''Basilosaurus isis'': Apex predator in oceans of the late Eocene |journal=PLOS ONE |volume=14 |issue=1 |pages=e0209021 |doi=10.1371/journal.pone.0209021 |pmid=30625131 |pmc=6326415 |bibcode=2019PLoSO..1409021V |doi-access=free }}</ref>
* A study on the variation in feeding behavior of fossil toothed whales with extremely long rostra is published by McCurry & Pyenson (2019).<ref>{{Cite journal|author1=Matthew R. McCurry |author2=Nicholas D. Pyenson |year=2019 |title=Hyper-longirostry and kinematic disparity in extinct toothed whales |journal=Paleobiology |volume=45 |issue=1 |pages= 21–29|doi=10.1017/pab.2018.33 |s2cid=91258072 |doi-access=free }}</ref>
* A study on the evolution of [[Philosophy:Animal echolocation#Toothed whales|echolocation]] of toothed whales, as indicated by the anatomy of a skull of a toothed whale from the [[Earth:Oligocene|Oligocene]] Pysht Formation ({{wipe|Washington (state)}}, {{wipe|United States}}) resembling ''[[Biology:Olympicetus|Olympicetus]] avitus'', is published by Racicot ''et al.'' (2019).<ref>{{Cite journal|author1=Rachel A. Racicot |author2=Robert W. Boessenecker |author3=Simon A. F. Darroch |author4=Jonathan H. Geisler |year=2019 |title=Evidence for convergent evolution of ultrasonic hearing in toothed whales (Cetacea: Odontoceti) |journal=Biology Letters |volume=15 |issue=5 |pages=Article ID 20190083 |doi=10.1098/rsbl.2019.0083 |pmid=31088283 |pmc=6548736 }}</ref>
* Redescription of the [[Biology:Holotype|holotype]] and referred specimen of ''[[Biology:Prosqualodon|Prosqualodon]] australis'' from the Miocene [[Earth:Gaiman Formation|Gaiman Formation]] ({{wipe|Argentina}}) and a study on the phylogenetic relationships of this species is published by Gaetán, Buono & Gaetano (2019).<ref>{{cite journal |author1=Carlos Maximiliano Gaetán |author2=Mónica R. Buono |author3=Leandro C. Gaetano |year=2019 |title=''Prosqualodon australis'' (Cetacea: Odontoceti) from the early Miocene of Patagonia, Argentina: redescription and phylogenetic analysis |journal=Ameghiniana |volume=56 |issue=1 |pages=1–27 |doi=10.5710/AMGH.21.11.2018.3208 }}</ref>
* Isolated teeth resembling tooth taxon ''Phococetus vasconum'' are described from the Pungo River Formation (North Carolina, {{wipe|United States}}) by Boessenecker (2019), who also notes their similarities to the teeth of ''[[Biology:Inticetus|Inticetus]] vertizi'', and suggests that ''Phococetus'' may be an ''Inticetus''-like, large [[Biology:Heterodont|heterodont]] [[Biology:Toothed whale|toothed whale]].<ref>{{cite journal |author=Robert W. Boessenecker |year=2019 |title=Problematic archaic whale ''Phococetus'' (Cetacea: Odontoceti) from the Lee Creek Mine, North Carolina, USA, with comments on geochronology of the Pungo River Formation |journal=PalZ |volume=93 |issue=1 |pages=93–103 |doi=10.1007/s12542-018-0419-3 |s2cid=134575348 }}</ref>
* A study on the anatomy and phylogenetic relationships of ''[[Biology:Phoberodon|Phoberodon]] arctirostris'' is published by Viglino ''et al.'' (2019).<ref>{{cite journal |author1=Mariana Viglino |author2=Mónica R. Buono |author3=R. Ewan Fordyce |author4=José I. Cuitiño |author5=Erich M. G. Fitzgerald |year=2019 |title=Anatomy and phylogeny of the large shark-toothed dolphin ''Phoberodon arctirostris'' Cabrera, 1926 (Cetacea: Odontoceti) from the early Miocene of Patagonia (Argentina) |journal=Zoological Journal of the Linnean Society |volume=185 |issue=2 |pages=511–542 |doi=10.1093/zoolinnean/zly053 }}</ref>
* An isolated tooth of an ''[[Biology:Inticetus|Inticetus]]''-like cetacean is described from the Miocene deposits close to the village of Melpignano (Province of Lecce, Italy) by Peri ''et al.'' (2019), who also review the geographic distribution of fossils of ''Inticetus''-like cetaceans.<ref>{{Cite journal|author1=Emanuele Peri |author2=Alberto Collareta |author3=Gianni Insacco |author4=Giovanni Bianucci |year=2019 |title=An ''Inticetus''-like (Cetacea: Odontoceti) postcanine tooth from the Pietra leccese (Miocene, southeastern Italy) and its palaeobiogeographical implications |journal=Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen |volume=291 |issue=2 |pages=221–228 |doi=10.1127/njgpa/2019/0799 }}</ref>
* A skull of a late Miocene [[Biology:Beaked whale|beaked whale]] belonging or related to the species ''[[Biology:Messapicetus|Messapicetus]] longirostris'', imaged by means of  computed tomography rather than being extracted mechanically from the stone matrix, is described from Menorca ({{wipe|Spain}}) by Bianucci ''et al.'' (2019).<ref>{{Cite journal|author1=Giovanni Bianucci |author2=Sergio Llàcer |author3=Josep Quintana Cardona |author4=Alberto Collareta |author5=Agustí Rodríguez Florit |year=2019 |title=A new beaked whale record from the upper Miocene of Menorca, Balearic Islands, based on CT-scan analysis of limestone slabs |journal=Acta Palaeontologica Polonica |volume=64 |issue=2 |pages=291–302 |doi=10.4202/app.00593.2019 |doi-access=free }}</ref>
* A new beaked whale specimen, with anatomy indicating that it relied primarily on suction feeding, is described from the upper Miocene [[Earth:Gram Formation|Gram Formation]] ({{wipe|Denmark}}) by Ramassamy & Lauridsen (2019).<ref>{{Cite journal|author1=Benjamin Ramassamy |author2=Henrik Lauridsen |year=2019 |title=A new specimen of Ziphiidae (Cetacea, Odontoceti) from the late Miocene of Denmark with morphological evidence for suction feeding behaviour |journal=Royal Society Open Science |volume=6 |issue=10 |pages=Article ID 191347 |doi=10.1098/rsos.191347 |pmid=31824732 |pmc=6837206 |bibcode=2019RSOS....691347R }}</ref>
* A study on the anatomy and phylogenetic relationships of ''[[Biology:Diaphorocetus|Diaphorocetus]] poucheti'' is published online by Paolucci ''et al.'' (2019).<ref>{{cite journal |author1=Florencia Paolucci |author2=Mónica R. Buono |author3=Marta S. Fernández |author4=Felix G. Marx |author5=José I. Cuitiño |year=2019 |title=''Diaphorocetus poucheti'' (Cetacea, Odontoceti, Physeteroidea) from Patagonia, Argentina: one of the earliest sperm whales |journal=Journal of Systematic Palaeontology |volume=18 |issue=4 |pages=335–355 |doi=10.1080/14772019.2019.1605544 |s2cid=196658603 }}</ref>
* A study on dental damage in a set of teeth of ''[[Biology:Scaldicetus|Scaldicetus]] caretti'' from the Miocene of Belgium is published by Lambert & Bianucci (2019), who interpret this damage as evidence indicating that ''S. caretti'' was a [[Biology:Macroraptorial sperm whale|macroraptorial]] (rather than [[Biology:Aquatic feeding mechanisms#Suction feeding|suction-feeding]]) top predator.<ref>{{cite journal |author1=Olivier Lambert |author2=Giovanni Bianucci |year=2019 |title=How to break a sperm whale's teeth: dental damage in a large Miocene physeteroid from the North Sea basin |journal=Journal of Vertebrate Paleontology |volume=39 |issue=4 |pages=e1660987 |doi=10.1080/02724634.2019.1660987 |s2cid=204150420 }}</ref>
* A study on the anatomy and phylogenetic relationships of ''[[Biology:Mystacodon|Mystacodon]] selenensis'' is published by de Muizon ''et al.'' (2019).<ref>{{Cite journal|author1=Christian de Muizon |author2=Giovanni Bianucci |author3=Manuel Martínez-Cáceres |author4=Olivier Lambert |year=2019 |title=''Mystacodon selenensis'', the earliest known toothed mysticete (Cetacea, Mammalia) from the late Eocene of Peru: anatomy, phylogeny, and feeding adaptations |journal=Geodiversitas |volume=41 |issue=11 |pages=401–499 |doi=10.5252/geodiversitas2019v41a11 |s2cid=189969073 |url=http://sciencepress.mnhn.fr/en/periodiques/geodiversitas/41/11 |doi-access=free }}</ref>
* Three premolar teeth of a member of the genus ''[[Biology:Llanocetus|Llanocetus]]'' reaching an estimated total body length of up to 12 m are described from the [[Earth:Eocene|Eocene]] Submeseta Formation (Seymour Island, [[Earth:Antarctica|Antarctica]]) by Marx ''et al.'' (2019), who interpret these fossils as indicative of at least two independent origins of gigantism in [[Biology:Baleen whale|baleen whale]] evolutionary history.<ref>{{Cite journal|author1=Felix G. Marx |author2=Mónica R. Buono |author3=Alistair R. Evans |author4=R. Ewan Fordyce |author5=Marcelo Reguero |author6=David P. Hocking |year=2019 |title=Gigantic mysticete predators roamed the Eocene Southern Ocean |journal=Antarctic Science |volume=31 |issue=2 |pages=98–104 |doi=10.1017/S095410201800055X |bibcode=2019AntSc..31...98M |doi-access=free }}</ref>
* A study aiming to explain the disappearance of baleen whales from the fossil record from 23 [[Year#SI prefix multipliers|Ma]] to 18–17  Ma is published by Marx, Fitzgerald & Fordyce (2019).<ref>{{Cite journal|author1=Felix G. Marx |author2=Erich M.G. Fitzgerald |author3=R. Ewan Fordyce |year=2019 |title=Like phoenix from the ashes: How modern baleen whales arose from a fossil "dark age" |journal=Acta Palaeontologica Polonica |volume=64 |issue=2 |pages=231–238 |doi=10.4202/app.00575.2018 |doi-access=free }}</ref>
* New specimen of ''[[Biology:Joumocetus|Joumocetus]] shimizui'', providing new information on the anatomy of this species, is described from the Miocene Haraichi Formation ({{wipe|Japan}}) by Kimura & Hasegawa (2019).<ref>{{Cite journal|author1=Toshiyuki Kimura |author2=Yoshikazu Hasegawa |year=2019 |title=New specimen of ''Joumocetus shimizui'' from the Miocene Haraichi Formation, Annaka Group, Gunma Prefecture, Japan |journal=Bulletin of Gunma Museum of Natural History |volume=23 |pages=13–20 |url=http://www.gmnh.pref.gunma.jp/wp-content/uploads/bulletin23_2.pdf }}</ref>
* A study on the age of fossil [[Biology:Gray whale|gray whale]] finds from Florida and Georgia is published by Garrison ''et al.'' (2019).<ref>{{cite journal |author1=Ervan G. Garrison |author2=Gary S. Morgan |author3=Krista McGrath |author4=Camilla Speller |author5=Alexander Cherkinsky |year=2019 |title=Recent dating of extinct Atlantic gray whale fossils, (''Eschrichtius robustus''), Georgia Bight and Florida, western Atlantic Ocean |journal=PeerJ |volume=7 |pages=e6381 |doi=10.7717/peerj.6381 |pmid=30746309 |pmc=6368218 }}</ref>
* Partial forelimb of a [[Biology:Rorqual|rorqual]] with several shark bite marks is described from the Pliocene [[Earth:Burica Sandstone|Burica Formation]] (Panama) by Cortés ''et al.'' (2019).<ref>{{cite journal |author1=Dirley Cortés |author2=Carlos De Gracia |author3=Jorge D. Carrillo-Briceño |author4=Gabriel Aguirre-Fernández |author5=Carlos Jaramillo |author6=Aldo Benites-Palomino |author7=Joaquín Enrique Atencio-Araúz |year=2019 |title=Shark-cetacean trophic interactions during the late Pliocene in the Central Eastern Pacific (Panama) |journal=Palaeontologia Electronica |volume=22 |issue=2 |pages=Article number 22.2.49 |doi=10.26879/953 |doi-access=free }}</ref>
* Partial skeleton of a [[Earth:Pleistocene|Pleistocene]] [[Biology:Blue whale|blue whale]] with an estimated total body length of 23.4–26.1 m, representing the largest whale fossil reported so far, is described from the Lago di San Giuliano (Italy) by Bianucci ''et al.'' (2019), who also estimate body size of a specimen of ''[[Biology:Pelocetus|Pelocetus]]'' from the Middle miocene locality of Mal Paso and two late Miocene [[Biology:Rorqual|rorqual]]s from the Cerro Los Quesos site ([[Earth:Pisco Formation|Pisco Formation]], Peru), and evaluate the implications of these fossils for the knowledge of evolution of gigantism of baleen whales.<ref>{{cite journal |author1=Giovanni Bianucci |author2=Felix G. Marx |author3=Alberto Collareta |author4=Agata Di Stefano |author5=Walter Landini |author6=Caterina Morigi |author7=Angelo Varola |year=2019 |title=Rise of the titans: baleen whales became giants earlier than thought |journal=Biology Letters |volume=15 |issue=5 |pages=Article ID 20190175 |doi=10.1098/rsbl.2019.0175 |pmid=31039728 |pmc=6548731 }}</ref>
* A study on the cetacean-bearing Miocene [[Earth:Gaiman Formation|Gaiman Formation]] ({{wipe|Argentina}}), and on its implications for inferring which factors affected the distribution and preservation of fossil cetaceans in several localities of the Southwestern [[Earth:Atlantic Ocean|Atlantic Ocean]], is published by Cuitiño ''et al.'' (2019).<ref>{{cite journal |author1=José I. Cuitiño |author2=Mónica R. Buono |author3=Mariana Viglino |author4=Nicolás D. Farroni |author5=Santiago Bessone |year=2019 |title=Factors affecting the preservation and distribution of cetaceans in the lower Miocene Gaiman Formation of Patagonia, Argentina |journal=Palaeogeography, Palaeoclimatology, Palaeoecology |volume=526 |pages=110–125 |doi=10.1016/j.palaeo.2019.03.013 |bibcode=2019PPP...526..110C }}</ref>
* A study on the diversity and abundance of cetaceans in the area of present-day Italy through the Pliocene, as indicated by [[Earth:Chronostratigraphy|chronostratigraphic]] data from Castell'Arquato Basin (northern Apennine Mountains), is published by Freschi ''et al.'' (2019).<ref>{{cite journal |author1=Alessandro Freschi |author2=Simone Cau |author3=Paola Monegatti |author4=Marco Roveri |year=2019 |title=Chronostratigraphic distribution of cetaceans in the Pliocene of Northern Apennines (Italy): Palaeoecological implications |journal=Palaeogeography, Palaeoclimatology, Palaeoecology |volume=526 |pages=13–27 |doi=10.1016/j.palaeo.2019.04.005 |bibcode=2019PPP...526...13F }}</ref>
* A study on the oxygen isotope composition of whale barnacle shells from three [[Earth:Pleistocene|Pleistocene]] localities along the eastern Pacific coast, and on their implications for the knowledge of the history of whale migrations, is published by Taylor ''et al.'' (2019).<ref>{{Cite journal|author1=Larry D. Taylor |author2=Aaron O'Dea |author3=Timothy J. Bralower |author4=Seth Finnegan |year=2019 |title=Isotopes from fossil coronulid barnacle shells record evidence of migration in multiple Pleistocene whale populations |journal=Proceedings of the National Academy of Sciences of the United States of America |volume=116 |issue=15 |pages=7377–7381 |doi=10.1073/pnas.1808759116 |pmid=30910962 |pmc=6462050 |doi-access=free }}</ref>

{| class="wikitable sortable" align="center" width="100%"
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! Name !! Novelty !! Status !! Authors !! Age !! Type locality !! Country !! Notes !! Images
|-
| ''[[Biology:Aegicetus|Aegicetus]]''<ref>{{Cite journal|author1=Philip D. Gingerich |author2=Mohammed Sameh M. Antar |author3=Iyad S. Zalmout |year=2019 |title=''Aegicetus gehennae'', a new late Eocene protocetid (Cetacea, Archaeoceti) from Wadi Al Hitan, Egypt, and the transition to tail-powered swimming in whales |journal=PLOS ONE |volume=14 |issue=12 |pages=e0225391 |doi=10.1371/journal.pone.0225391 |pmid=31825956 |pmc=6905522 |bibcode=2019PLoSO..1425391G |doi-access=free }}</ref>
| Gen. et sp. nov
| Valid
| [[Biography:Philip D. Gingerich|Gingerich]], Antar & Zalmout
| [[Earth:Eocene|Eocene]] ([[Earth:Priabonian|Priabonian]])
| Gehannam
| {{Flag|Egypt}}
| A [[Biology:Protocetidae|protocetid]]. The type species is ''A. gehennae''.
| PLoS ONE
|-
| ''Borealodon''<ref>{{Cite journal|author1=B. K. Shipps |author2=Carlos Mauricio Peredo |author3=Nicholas D. Pyenson |year=2019 |title=''Borealodon osedax'', a new stem mysticete (Mammalia, Cetacea) from the Oligocene of Washington State and its implications for fossil whale-fall communities |journal=Royal Society Open Science |volume=6 |issue=7 |pages=Article ID 182168 |doi=10.1098/rsos.182168 |pmid=31417706 |pmc=6689636 |bibcode=2019RSOS....682168S }}</ref>
| Gen. et sp. nov
| Valid
| Shipps, Peredo & Pyenson
| [[Earth:Oligocene|Oligocene]] ([[Earth:Rupelian|Rupelian]])
| Pysht
| {{Flag|United States}}<br />({{Flag|Washington}})
| A [[Biology:Crown group#Stem groups|stem]]-[[Biology:Baleen whale|mysticete]]. The type species is ''B. osedax''.
| 
|-
| ''[[Biology:Casatia|Casatia]]''<ref>{{cite journal |author1=Giovanni Bianucci |author2=Fabio Pesci |author3=Alberto Collareta |author4=Chiara Tinelli |year=2019 |title=A new Monodontidae (Cetacea, Delphinoidea) from the lower Pliocene of Italy supports a warm-water origin for narwhals and white whales |journal=Journal of Vertebrate Paleontology |volume=39 |issue=3 |pages=e1645148 |doi=10.1080/02724634.2019.1645148 |s2cid=202018525 }}</ref>
| Gen. et sp. nov
| Valid
| Bianucci ''et al.''
| Early Pliocene
| 
| {{Flag|Italy}}
| A member of the family [[Biology:Monodontidae|Monodontidae]]. Genus includes new species ''C. thermophila''.
| 
|-
| ''[[Biology:Kentriodon|Kentriodon nakajimai]]''<ref>{{Cite journal|author1=Toshiyuki Kimura |author2=Yoshikazu Hasegawa |year=2019 |title=A new species of ''Kentriodon'' (Cetacea, Odontoceti, Kentriodontidae) from the Miocene of Japan |journal=Journal of Vertebrate Paleontology |volume=39 |issue=1 |pages=e1566739 |doi=10.1080/02724634.2019.1566739 |s2cid=92045700 }}</ref>
| Sp. nov
| Valid
| Kimura & Hasegawa
| Miocene ([[Earth:Serravallian|Serravallian]]/[[Biology:Tortonian|Tortonian]])
| Haraichi
| {{Flag|Japan}}
| 
| 
|-
| ''[[Biology:Miobalaenoptera|Miobalaenoptera]]''<ref>{{Cite journal|author1=Yoshihiro Tanaka |author2=Mahito Watanabe |year=2019 |title=An early and new member of Balaenopteridae from the upper Miocene of Hokkaido, Japan |journal=Journal of Systematic Palaeontology |volume=17 |issue=16 |pages=1417–1431 |doi=10.1080/14772019.2018.1532968 |s2cid=91715946 }}</ref>
| Gen. et sp. nov
| Valid
| Tanaka & Watanabe
| Late Miocene
| Horokaoshirarika
| {{Flag|Japan}}
| A [[Biology:Rorqual|rorqual]]. Genus includes new species ''M. numataensis''.
|
|-
| ''Nehalaennia''<ref>{{Cite journal|author1=Michelangelo Bisconti |author2=Dirk K. Munsterman |author3=Klaas Post |year=2019 |title=A new balaenopterid whale from the late Miocene of the Southern North Sea Basin and the evolution of balaenopterid diversity (Cetacea, Mysticeti) |journal=PeerJ |volume=7 |pages=e6915 |doi=10.7717/peerj.6915 |pmid=31149399 |pmc=6526909 }}</ref>
| Gen. et sp. nov
| Valid
| Bisconti, Munsterman & Post
| Miocene (late [[Biology:Tortonian|Tortonian]])
| [[Earth:Breda Formation|Breda]]
| {{Flag|Netherlands}}
| A [[Biology:Rorqual|rorqual]]. The type species is ''N. devossi''.
| PeerJ
|-
| ''Niparajacetus''<ref>{{Cite journal|author1=Azucena Solis-Añorve |author2=Gerardo González-Barba |author3=René Hernández-Rivera |year=2019 |title=Description of a new toothed mysticete from the Late Oligocene of San Juan de La Costa, B.C.S., México |journal=Journal of South American Earth Sciences |volume=89 |pages=337–346 |doi=10.1016/j.jsames.2018.11.015 |bibcode=2019JSAES..89..337S }}</ref>
| Gen. et sp. nov
| Valid
| Solis-Añorve, González-Barba & Hernández-Rivera
| [[Earth:Oligocene|Oligocene]] ([[Earth:Chattian|Chattian]])
| [[Earth:El Cien Formation|El Cien]]
| {{Flag|Mexico}}
| A [[Biology:Baleen whale|baleen whale]] belonging to the superfamily Aetiocetoidea. The type species is ''N. palmadentis''
| 
|-
| ''[[Biology:Norrisanima miocaena|Norrisanima]]''<ref>{{Cite journal|author1=Matthew S. Leslie |author2=Carlos Mauricio Peredo |author3=Nicholas D. Pyenson |year=2019 |title=''Norrisanima miocaena'', a new generic name and redescription of a stem balaenopteroid mysticete (Mammalia, Cetacea) from the Miocene of California |journal=PeerJ |volume=7 |pages=e7629 |doi=10.7717/peerj.7629 |pmid=31608165 |pmc=6788442 }}</ref>
| Gen. et comb. nov
| Valid
| Leslie, Peredo & Pyenson
| Miocene (late [[Biology:Tortonian|Tortonian]])
| [[Earth:Monterey Formation|Monterey]]
| {{Flag|United States}}<br />({{Flag|California}})
| A member of [[Biology:Crown group#Pan-group|Pan]]-Balaenopteroidea. The type species is ''"[[Biology:Megaptera|Megaptera]]" miocaena'' Kellogg (1922).
| PeerJ
|-
| ''[[Biology:Peregocetus|Peregocetus]]''<ref>{{Cite journal|author1=Olivier Lambert |author2=Giovanni Bianucci |author3=Rodolfo Salas-Gismondi |author4=Claudio Di Celma |author5=Etienne Steurbaut |author6=Mario Urbina |author7=Christian de Muizon |year=2019 |title=An amphibious whale from the Middle Eocene of Peru reveals early South Pacific dispersal of quadrupedal cetaceans |journal=Current Biology |volume=29 |issue=8 |pages=1352–1359.e3 |doi=10.1016/j.cub.2019.02.050 |pmid=30955933 |s2cid=93004029 |doi-access=free }}</ref>
| Gen. et sp. nov
| Valid
| Lambert ''et al.''
| [[Earth:Eocene|Eocene]] ([[Earth:Lutetian|Lutetian]])
| Pisco Basin
| {{Flag|Peru}}
| A [[Biology:Protocetidae|protocetid]]. The type species is ''P. pacificus''.
| 
|-
| ''Pliokogia''<ref>{{Cite journal|author1=Alberto Collareta |author2=Franco Cigala Fulgosi |author3=Giovanni Bianucci |year=2019 |title=A new kogiid sperm whale from northern Italy supports psychrospheric conditions in the early Pliocene Mediterranean Sea |journal=Acta Palaeontologica Polonica |volume=64 |issue=3 |pages=609–626 |doi=10.4202/app.00578.2018 |doi-access=free }}</ref>
| Gen. et sp. nov
| Valid
| Collareta, Cigala Fulgosi & Bianucci
| Pliocene (Zanclean)
| 
| {{Flag|Italy}}
| A member of the family [[Biology:Kogiidae|Kogiidae]]. The type species is ''P. apenninica''.
| 
|-
| ''[[Biology:Tranatocetus|Tranatocetus maregermanicum]]''<ref>{{Cite journal|author1=Felix G. Marx |author2=Klaas Post |author3=Mark Bosselaers |author4=Dirk K. Munsterman |year=2019 |title=A large Late Miocene cetotheriid (Cetacea, Mysticeti) from the Netherlands clarifies the status of Tranatocetidae |journal=PeerJ |volume=7 |pages=e6426 |doi=10.7717/peerj.6426 |pmid=30783574 |pmc=6377596 }}</ref>
| Sp. nov
| Valid
| Marx ''et al.''
| Late Miocene
| [[Earth:Breda Formation|Breda]]
| {{Flag|Netherlands}}
| A member of the family [[Biology:Cetotheriidae|Cetotheriidae]]
| [[File:Tranatocetus.PNG|center|100px]]
|-
| ''Tupelocetus''<ref>{{cite journal |author1=Matthew L. Gibson |author2=John Mnieckowski |author3=Jonathan H. Geisler |year=2019 |title=''Tupelocetus palmeri'', a new species of protocetid whale (Mammalia, Cetacea) from the middle Eocene of South Carolina |journal=Journal of Vertebrate Paleontology |volume=38 |issue=6 |pages=e1555165 |doi=10.1080/02724634.2018.1555165 |s2cid=109617439 }}</ref>
| Gen. et sp. nov
| Valid
| Gibson, Mnieckowski & Geisler
| [[Earth:Eocene|Eocene]] ([[Earth:Bartonian|Bartonian]])
| Tupelo Bay
| {{Flag|United States}}<br />({{Flag|South Carolina}})
| A [[Biology:Protocetidae|protocetid]]. Genus includes new species ''T. palmeri''.
| 
|-
| ''Yaquinacetus''<ref>{{Cite journal|author1=Olivier Lambert |author2=Stephen J. Godfrey |author3=Erich M. G. Fitzgerald |year=2019 |title=''Yaquinacetus meadi'', a new latest Oligocene–early Miocene dolphin (Cetacea, Odontoceti, Squaloziphiidae, fam. nov.) from the Nye Mudstone (Oregon, U.S.A.) |journal=Journal of Vertebrate Paleontology |volume=38 |issue=6 |pages=e1559174 |doi=10.1080/02724634.2018.1559174 |s2cid=108903672 }}</ref>
| Gen. et sp. nov
| Valid
| Lambert, Godfrey & Fitzgerald
| Latest [[Earth:Oligocene|Oligocene]]–early Miocene
| Nye
| {{Flag|United States}}<br />({{Flag|Oregon}})
| A relative of ''[[Biology:Squaloziphius|Squaloziphius]]''. Genus includes new species ''Y. meadi''.
|
|-
|}

===Carnivorans===
* A study on the morphology of bony labyrinths of extant and fossil carnivorans, and on its implications for inferring hunting behaviours of extinct carnivorans, is published by Schwab ''et al.'' (2019).<ref>{{Cite journal|author1=Julia A. Schwab |author2=Jürgen Kriwet |author3=Gerhard W. Weber |author4=Cathrin Pfaff |year=2019 |title=Carnivoran hunting style and phylogeny reflected in bony labyrinth morphometry |journal=Scientific Reports |volume=9 |issue=1 |pages=Article number 70 |doi=10.1038/s41598-018-37106-4 |pmid=30635617 |pmc=6329752 |bibcode=2019NatSR...9...70S }}</ref>
* A study assess the usefulness of the scapholunar (one of the [[Biology:Carpal bones|carpal bones]]) for determining ecology and habitat of carnivorans, based on data from living and extinct carnivorans, is published by Dunn ''et al.'' (2019).<ref>{{Cite journal|author1=Rachel H. Dunn |author2=Candice Cooper |author3=Joshua Lemert |author4=Natalie Mironov |author5=Julie A. Meachen |year=2019 |title=Locomotor correlates of the scapholunar of living and extinct carnivorans |journal=Journal of Morphology |volume=280 |issue=8 |pages=1197–1206 |doi=10.1002/jmor.21024 |pmid=31188504 |s2cid=186205259 }}</ref>
* A study on the morphology and functional anatomy of the thoracolumbar and [[Biology:Sacrum|sacro]]caudal regions of the vertebral column of ''[[Biology:Magericyon|Magericyon]] anceps'' is published online by Siliceo ''et al.'' (2019).<ref>{{Cite journal|author1=Gema Siliceo |author2=Mauricio Antón |author3=Jorge Morales |author4=Manuel J. Salesa |year=2019 |title=Built for strength: functional insights from the thoracolumbar and sacrocaudal regions of the late Miocene amphicyonid ''Magericyon anceps'' (Carnivora, Amphicyonidae) from Batallones-1 (Madrid, Spain) |journal=Journal of Mammalian Evolution |volume=27 |issue=3 |pages=497–518 |doi=10.1007/s10914-019-09477-6 |s2cid=199491763 }}</ref>
* Carnivoran fossils from the Hoyo Negro pit in the [[Earth:Sistema Sac Actun|Sac Actun cave system]] (Mexico), initially identified as remains of a bear belonging to the genus ''[[Biology:Tremarctos|Tremarctos]]'' and a [[Biology:Coyote|coyote]], a reinterpreted as remains of ''[[Biology:Arctotherium|Arctotherium]] wingei'' and ''[[Biology:Protocyon|Protocyon]] troglodytes'' by Schubert ''et al.'' (2019), representing the first record of these taxa outside [[Earth:South America|South America]].<ref>{{Cite journal|author1=Blaine W. Schubert |author2=James C. Chatters |author3=Joaquin Arroyo-Cabrales |author4=Joshua X. Samuels |author5=Leopoldo H. Soibelzon |author6=Francisco J. Prevosti |author7=Christopher Widga |author8=Alberto Nava |author9=Dominique Rissolo |author10=Pilar Luna Erreguerena |year=2019 |title=Yucatán carnivorans shed light on the Great American Biotic Interchange |journal=Biology Letters |volume=15 |issue=5 |pages=Article ID 20190148 |doi=10.1098/rsbl.2019.0148 |pmid=31039726 |pmc=6548739 }}</ref>
* Description of fossils of ''[[Biology:Nyctereutes donnezani|Nyctereutes donnezani]]'' from the early Pliocene locality of Çalta ([[Place:Turkey|Turkey]]), and study on the phylogenetic relationships of species belonging to the genus ''[[Biology:Nyctereutes|Nyctereutes]]'', is published by Daguenet & Sen (2019).<ref>{{cite journal |author1=Thibault Daguenet |author2=Sevket Sen |year=2019 |title=Phylogenetic relationships of ''Nyctereutes'' Temminck, 1838 (Canidae, Carnivora, Mammalia) from early Pliocene of Çalta, Turkey |journal=Geodiversitas |volume=41 |issue=18 |pages=663–667 |doi=10.5252/geodiversitas2019v41a18 |s2cid=204791208 |url=http://sciencepress.mnhn.fr/en/periodiques/geodiversitas/41/18 |doi-access=free }}</ref>
* Revision of Pleistocene canid fossils from the Sangiran Dome (Java, Indonesia), evaluating their implications for the knowledge of the timing of the arrival of members of the genus ''[[Biology:Cuon|Cuon]]'' in Java, is published by Volmer ''et al.'' (2019).<ref>{{Cite journal|author1=Rebekka Volmer |author2=Alexandra A.E. van der Geer |author3=Patricia Andrea Cabera |author4=Wibowo Unggul Prasetyo |author5=Iwan Kurniawan |year=2019 |title=When did ''Cuon'' reach Java? – Reinvestigation of canid fossils from ''Homo erectus'' faunas |journal=Geobios |volume=55 |pages=89–102 |doi=10.1016/j.geobios.2019.06.004 }}</ref>
* A study on the taxonomy of the [[Biology:Dire wolf|dire wolf]], assessing whether fossils from Mexico and the western coast of the {{wipe|United States}} should be assigned to the distinct subspecies ''Canis dirus guildayi'', is published by Ruiz-Ramoni & Montellano-Ballesteros (2019).<ref>{{Cite journal|author1=Damián Ruiz-Ramoni |author2=Marisol Montellano-Ballesteros |year=2019 |title=Taxonomía y biogeografía del extinto lobo gigante, ''Canis dirus'' Leidy, 1858, en México |journal=Boletín de la Sociedad Geológica Mexicana |volume=71 |issue=1 |pages=121–137 |doi=10.18268/BSGM2019v71n1a7 |doi-access=free }}</ref>
* A study on the origin of the current genetic uniqueness of the Italian wolves, as indicated by data from mitochondrial DNA of the Pleistocene and Holocene [[Biology:Canidae|canid]] specimens from Italy, is published by Ciucani ''et al.'' (2019).<ref>{{Cite journal|author1=Marta Maria Ciucani |author2=Davide Palumbo |author3=Marco Galaverni |author4=Patrizia Serventi |author5=Elena Fabbri |author6=Gloria Ravegnini |author7=Sabrina Angelini |author8=Elena Maini |author9=Davide Persico |author10=Romolo Caniglia |author11=Elisabetta Cilli |year=2019 |title=Old wild wolves: ancient DNA survey unveils population dynamics in Late Pleistocene and Holocene Italian remains |journal=PeerJ |volume=7 |pages=e6424 |doi=10.7717/peerj.6424 |pmid=30944772 |pmc=6441319 }}</ref>
* A study on the age of dog remains from the Koster Site and Stilwell II site in Illinois, dated to between 10,190 and 9,630 cal [[Earth:Before Present|BP]], is published by Perri ''et al.'' (2019), who interpret these remains as representing the earliest confirmed evidence of domestic dogs in the Americas and the earliest confirmed individual dog burials anywhere in the world.<ref>{{Cite journal|author1=Angela Perri |author2=Chris Widga |author3=Dennis Lawler |author4=Terrance Martin |author5=Thomas Loebel |author6=Kenneth Farnsworth |author7=Luci Kohn |author8=Brent Buenger |year=2019 |title=New evidence of the earliest domestic dogs in the Americas |journal=American Antiquity |volume=84 |issue=1 |pages=68–87 |doi=10.1017/aaq.2018.74 |s2cid=165366371 |url=http://dro.dur.ac.uk/27455/1/27455.pdf }}</ref>
* A study on the history of pre-contact dogs in the North American Arctic, aiming to determine the relationship between dogs from archaeological Paleo-Inuit and Inuit sites and modern Arctic dog populations, is published by Ameen ''et al.'' (2019).<ref>{{Cite journal|author1=Carly Ameen |author2=Tatiana R. Feuerborn |author3=Sarah K. Brown |author4=Anna Linderholm |author5=Ardern Hulme-Beaman |author6=Ophélie Lebrasseur |author7=Mikkel-Holger S. Sinding |author8=Zachary T. Lounsberry |author9=Audrey T. Lin |author10=Martin Appelt |author11=Lutz Bachmann |author12=Matthew Betts |author13=Kate Britton |author14=John Darwent |author15=Rune Dietz |author16=Merete Fredholm |author17=Shyam Gopalakrishnan |author18=Olga I. Goriunova |author19=Bjarne Grønnow |author20=James Haile |author21=Jón Hallsteinn Hallsson |author22=Ramona Harrison |author23=Mads Peter Heide-Jørgensen |author24=Rick Knecht |author25=Robert J. Losey |author26=Edouard Masson-MacLean |author27=Thomas H. McGovern |author28=Ellen McManus-Fry |author29=Morten Meldgaard |author30=Åslaug Midtdal |author31=Madonna L. Moss |author32=Iurii G. Nikitin |author33=Tatiana Nomokonova |author34=Albína Hulda Pálsdóttir |author35=Angela Perri |author36=Aleksandr N. Popov |author37=Lisa Rankin |author38=Joshua D. Reuther |author39=Mikhail Sablin |author40=Anne Lisbeth Schmidt |author41=Scott Shirar |author42=Konrad Smiarowski |author43=Christian Sonne |author44=Mary C. Stiner |author45=Mitya Vasyukov |author46=Catherine F. West |author47=Gro Birgit Ween |author48=Sanne Eline Wennerberg |author49=Øystein Wiig |author50=James Woollett |author51=Love Dalén |author52=Anders J. Hansen |author53=M. Thomas P. Gilbert |author54=Benjamin N. Sacks |author55=Laurent Frantz |author56=Greger Larson |author57=Keith Dobney |author58=Christyann M. Darwent |author59=Allowen Evin |year=2019 |title=Specialized sledge dogs accompanied Inuit dispersal across the North American Arctic |journal=Proceedings of the Royal Society B: Biological Sciences |volume=286 |issue=1916 |pages=Article ID 20191929 |doi=10.1098/rspb.2019.1929 |pmid=31771471 |pmc=6939252 }}</ref>
* Remains of ''[[Biology:Indarctos|Indarctos]] punjabiensis'' are described from the late Miocene locality of Las Casiones ({{wipe|Spain}}) by Abella ''et al.'' (2019), representing the last population of members of the subfamily [[Biology:Ailuropodinae|Ailuropodinae]] from the Iberian fossil record, and possibly from Europe.<ref>{{cite journal |author1=Juan Abella |author2=Daniel Hontecillas |author3=Alberto Valenciano |author4=Plinio Montoya |author5=Jorge Morales |author6=María Dolores Pesquero |author7=Luis Alcalá |year=2019 |title=The last record of an ailuropod bear from the Iberian Peninsula |journal=Geodiversitas |volume=41 |issue=23 |pages=797–809 |doi=10.5252/geodiversitas2019v41a23 |s2cid=213478471 |url=http://sciencepress.mnhn.fr/en/periodiques/geodiversitas/41/23 |doi-access=free }}</ref>
* A study on the [[Earth:Trophic level|trophic]] and [[Biology:Ecological niche|ecological niche]] widths of ancient and modern pandas is published by Han ''et al.'' (2019).<ref>{{Cite journal|author1=Han Han |author2=Wei Wei |author3=Yibo Hu |author4=Yonggang Nie |author5=Xueping Ji |author6=Li Yan |author7=Zejun Zhang |author8=Xiaoxue Shi |author9=Lifeng Zhu |author10=Yunbing Luo |author11=Weicai Chen |author12=Fuwen Wei |year=2019 |title=Diet evolution and habitat contraction of giant pandas via stable isotope analysis |journal=Current Biology |volume=29 |issue=4 |pages=664–669.e2 |doi=10.1016/j.cub.2018.12.051 |pmid=30713107 |s2cid=73432116 |doi-access=free }}</ref>
* Nuclear genome of an ∼5,000-year-old giant panda from Jiangdongshan (Yunnan, China) is sequenced by Sheng ''et al.'' (2019), who assign this specimen to a genetically distinct extinct population forming the [[Biology:Sister group|sister group]] to all extant populations, and present evidence indicative of [[Biology:Genetic admixture|genetic admixture]] from this extinct population in extant pandas.<ref>{{Cite journal|author1=Gui-Lian Sheng |author2=Nikolas Basler |author3=Xue-Ping Ji |author4=Johanna L.A. Paijmans |author5=Federica Alberti |author6=Michaela Preick |author7=Stefanie Hartmann |author8=Michael V. Westbury |author9=Jun-Xia Yuan |author10=Nina G. Jablonski |author11=Georgios Xenikoudakis |author12=Xin-Dong Hou |author13=Bo Xiao |author14=Jian-Hui Liu |author15=Michael Hofreiter |author16=Xu-Long Lai |author17=Axel Barlow |year=2019 |title=Paleogenome reveals genetic contribution of extinct giant panda to extant populations |journal=Current Biology |volume=29 |issue=10 |pages=1695–1700.e6 |doi=10.1016/j.cub.2019.04.021 |pmid=31080081 |s2cid=148572091 |doi-access=free }}</ref>
* A study on functional adaptations in the anatomy of the elbow joint of extant and fossil bears, and on its implications for inferring paleobiology of [[Earth:Quaternary|Quaternary]] fossil species of bears, is published by Meloro & de Oliveira (2019).<ref>{{Cite journal|author1=Carlo Meloro |author2=Alessandro Marques de Oliveira |year=2019 |title=Elbow joint geometry in bears (Ursidae, Carnivora): a tool to infer paleobiology and functional adaptations of Quaternary fossils |journal=Journal of Mammalian Evolution |volume=26 |issue=1 |pages=133–146 |doi=10.1007/s10914-017-9413-x |s2cid=25839635 |doi-access=free }}</ref>
* A study on the evolution of the shape and size of the basicranium of bears, as indicated by data from extant and extinct taxa, is published by Arnaudo ''et al.'' (2019).<ref>{{Cite journal|author1=María Eugenia Arnaudo |author2=Néstor Toledo |author3=Leopoldo Soibelzon |author4=Paula Bona |year=2019 |title=Phylogenetic signal analysis in the basicranium of Ursidae (Carnivora, Mammalia) |journal=PeerJ |volume=7 |pages=e6597 |doi=10.7717/peerj.6597 |pmid=30891368 |pmc=6422017 }}</ref>
* A study on the evolution of bear teeth, and on its implications for inferring the phylogenetic placement of fossil bear taxa, is published by Jiangzuo, Liu & Chen (2019).<ref>{{Cite journal|author1=Qigao Jiangzuo |author2=Jinyi Liu |author3=Jin Chen |year=2019 |title=Morphological homology, evolution, and proposed nomenclature for bear dentition |journal=Acta Palaeontologica Polonica |volume=64 |issue=4 |pages=693–710 |doi=10.4202/app.00629.2019 |doi-access=free }}</ref>
* A study on the diet of ''[[Biology:Agriotherium|Agriotherium]] africanum'' from the {{wipe|South Africa}}n fossil site of Langebaanweg, as indicated by tooth microwear, is published by Stynder ''et al.'' (2019).<ref>{{Cite journal|author1=Deano D. Stynder |author2=Larisa R. G. DeSantis |author3=Shelly L. Donohue |author4=Blaine W. Schubert |author5=Peter S. Ungar |year=2019 |title=A dental microwear texture analysis of the early Pliocene African ursid ''Agriotherium africanum'' (Mammalia, Carnivora, Ursidae) |journal=Journal of Mammalian Evolution |volume=26 |issue=4 |pages=505–515 |doi=10.1007/s10914-018-9436-y |s2cid=4990447 }}</ref>
* The first fossil of a member of the genus ''Agriotherium'' from Italy will be described by Bellucci ''et al.'' (2019).<ref>{{Cite journal|author1=Luca Bellucci |author2=Italo Biddittu |author3=Mauro Brilli |author4=Jacopo Conti |author5=Marco Germani |author6=Francesca Giustini |author7=Dawid Adam Iurino |author8=Ilaria Mazzini |author9=Raffaele Sardella |year=2019 |title=First occurrence of the short-faced bear ''Agriotherium'' (Ursidae, Carnivora) in Italy: biochronological and palaeoenvironmental implications |journal=Italian Journal of Geosciences |volume=138 |issue=1 |pages=124–135 |doi=10.3301/IJG.2018.31 |hdl=10261/171952 }}</ref>
* A study on the systematics and paleobiology of bears from the Dmanisi site ([[Place:Georgia (country)|Georgia]]), and on their coexistence with early members of the genus ''Homo'', is published by Medin ''et al.'' (2019).<ref>{{cite journal |author1=Tsegai Medin |author2=Bienvenido Martínez-Navarro |author3=Joan Madurell-Malapeira |author4=Borja Figueirido |author5=Giorgi Kopaliani |author6=Florent Rivals |author7=Gocha Kiladze |author8=Paul Palmqvist |author9=David Lordkipanidze |year=2019 |title=The bears from Dmanisi and the first dispersal of early ''Homo'' out of Africa |journal=Scientific Reports |volume=9 |issue=1 |pages=Article number 17752 |doi=10.1038/s41598-019-54138-6 |pmid=31780699 |pmc=6882906 |bibcode=2019NatSR...917752M }}</ref>
* A study aiming to decipher the various factors influencing the isotopic composition of bones of a potentially omnivorous species like [[Biology:Cave bear|cave bear]], as well examining how likely are the different interpretations of the palaeodiet of the Romanian cave bears in comparison with the rest of the European cave bears, is published by Bocherens (2019).<ref>{{Cite journal|author=Hervé Bocherens |year=2019 |title=Isotopic insights on cave bear palaeodiet |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=4 |pages=410–421 |doi=10.1080/08912963.2018.1465419 |s2cid=89753117 }}</ref>
* A study on the cranial and mandibular morphology of ''[[Biology:Ursus deningeri|Ursus deningeri]]'' compared to other bear species, and on its implications for inferring the palaeobiology of this species, is published by van Heteren ''et al.'' (2019).<ref>{{Cite journal|author1=Anneke H. van Heteren |author2=Mikel Arlegi |author3=Elena Santos |author4=Juan-Luis Arsuaga |author5=Asier Gómez-Olivencia |year=2019 |title=Cranial and mandibular morphology of Middle Pleistocene cave bears (''Ursus deningeri''): implications for diet and evolution |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=4 |pages=485–499 |doi=10.1080/08912963.2018.1487965 |s2cid=92294179 }}</ref>
* A study on the tooth-root morphology of [[Biology:Maxilla|maxilla]]ry teeth of living bears, and on its implications for inferring the diet and feeding behaviour of the cave bears, is published by Pérez-Ramos ''et al.'' (2019).<ref>{{Cite journal|author1=Alejandro Pérez-Ramos |author2=Kornelius Kupczik |author3=Anneke H. Van Heteren |author4=Gernot Rabeder |author5=Aurora Grandal-D'Anglade |author6=Francisco J. Pastor |author7=Francisco J. Serrano |author8=Borja Figueirido |year=2019 |title=A three-dimensional analysis of tooth-root morphology in living bears and implications for feeding behaviour in the extinct cave bear |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=4 |pages=461–473 |doi=10.1080/08912963.2018.1525366 |s2cid=91721909 }}</ref>
* A study on the feedings preferences and timing of extinction of cave bears in Mediterranean Europe based on data from two [[Earth:Paleolithic|Paleolithic]] cave bear sites in northeastern Italy (Paina Cave and Trene Cave) is published by Terlato ''et al.'' (2019).<ref>{{Cite journal|author1=Gabriele Terlato |author2=Hervé Bocherens |author3=Matteo Romandini |author4=Nicola Nannini |author5=Keith A. Hobson |author6=Marco Peresani |year=2019 |title=Chronological and Isotopic data support a revision for the timing of cave bear extinction in Mediterranean Europe |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=4 |pages=474–484 |doi=10.1080/08912963.2018.1448395 |s2cid=90029163 }}</ref>
* A study on the timing and causes of extinction of cave bears in the [[Place:Alps|Alps]] is published by Döppes ''et al.'' (2019).<ref>{{Cite journal|author1=Doris Döppes |author2=Gernot Rabeder |author3=Christine Frischauf |author4=Nadja Kavcik-Graumann |author5=Bernd Kromer |author6=Susanne Lindauer |author7=Ronny Friedrich |author8=Wilfried Rosendahl |year=2019 |title=Extinction pattern of Alpine cave bears - new data and climatological interpretation |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=4 |pages=422–428 |doi=10.1080/08912963.2018.1487422 |s2cid=90533707 }}</ref>
* A study on the [[Morphometrics|morphometric]] and [[Biology:Polymorphism|morphotypic]] variability of upper incisors of the Middle and Late [[Earth:Pleistocene|Pleistocene]] cave bears from the [[Earth:Caucasus|Caucasus]] and Ural Mountains is published by Baryshnikov, Gimranov & Kosintsev (2019).<ref>{{Cite journal|author1=Gennady Baryshnikov |author2=Dmitry Gimranov |author3=Pavel Kosintsev |year=2019 |title=Variability of the upper incisors in the cave bears (Carnivora, Ursidae) from the Caucasus and Urals |journal=Comptes Rendus Palevol |volume=18 |issue=2 |pages=209–222 |doi=10.1016/j.crpv.2018.08.001 |doi-access=free }}</ref>
* A study on the [[Morphometrics|morphometrical]] variability of upper cheek teeth of cave bears from 123 geographical sites of Pliocene – [[Earth:Pleistocene|Pleistocene]] ages is published by Baryshnikov & Puzachenko (2019).<ref>{{Cite journal|author1=Gennady F. Baryshnikov |author2=Andrey Y. Puzachenko |year=2019 |title=Morphometry of upper cheek teeth of cave bears (Carnivora, Ursidae) |journal=Boreas |volume=48 |issue=3 |pages=581–604 |doi=10.1111/bor.12360 }}</ref>
* A study evaluating how the morphology of teeth of cave bears from the [[Earth:Scladina|Scladina]] Cave (Belgium) changed over time is published by Charters ''et al.'' (2019).<ref>{{Cite journal|author1=Daniel Charters |author2=Grégory Abrams |author3=Isabelle De Groote |author4=Kévin Di Modica |author5=Dominique Bonjean |author6=Carlo Meloro |year=2019 |title=Temporal variation in cave bear (''Ursus spelaeus'') dentition: The stratigraphic sequence of Scladina Cave, Belgium |journal=Quaternary Science Reviews |volume=205 |pages=76–85 |doi=10.1016/j.quascirev.2018.12.012 |bibcode=2019QSRv..205...76C |url=http://researchonline.ljmu.ac.uk/id/eprint/9931/7/JQSR_2018_479_Original_V0.pdf }}</ref>
* A study on the feeding habits of cave bears from the Toll Cave in Catalonia, as indicated by data from tooth microwear and from stable isotopes extracted from bone collagen, is published by Ramírez-Pedraza ''et al.'' (2019).<ref>{{Cite journal|author1=Iván Ramírez-Pedraza |author2=Carlos Tornero |author3=Spyridoula Pappa |author4=Sahra Talamo |author5=Domingo C. Salazar-García |author6=Ruth Blasco |author7=Jordi Rosell |author8=Florent Rivals |year=2019 |title=Microwear and isotopic analyses on cave bear remains from Toll Cave reveal both short-term and long-term dietary habits |journal=Scientific Reports |volume=9 |issue=1 |pages=Article number 5716 |doi=10.1038/s41598-019-42152-7 |pmid=30952915 |pmc=6450970 |bibcode=2019NatSR...9.5716R }}</ref>
* A study on the feeding habits of cave bears from six Late Pleistocene caves in Catalonia will be published by Ramírez-Pedraza ''et al.'' (2019).<ref>{{Cite journal|author1=Iván Ramírez-Pedraza |author2=Spyridoula Pappa |author3=Ruth Blasco |author4=Maite Arilla |author5=Jordi Rosell |author6=Ferran Millán |author7=Julià Maroto |author8=Joaquim Soler |author9=Narcís Soler |author10=Florent Rivals |year=2019 |title=Dietary habits of the cave bear from the Late Pleistocene in the northeast of the Iberian Peninsula |journal=Quaternary International |volume=557 |pages= 63–69|doi=10.1016/j.quaint.2019.09.043 |s2cid=204261124 }}</ref>
* A study on the timing of the occupation of the Schwabenreith Cave (Austria) by cave bears is published by Spötl ''et al.'' (2019).<ref>{{Cite journal|author1=Christoph Spötl |author2=Denis Scholz |author3=Gernot Rabeder |author4=Paula J. Reimer |year=2019 |title=Cave bear occupation in Schwabenreith Cave, Austria, during the early last glacial: constraints from <sup>230</sup>Th/U‐dated speleothems  |journal=Journal of Quaternary Science |volume=34 |issue=6 |pages=424–432 |doi=10.1002/jqs.3110 |doi-access=free }}</ref>
* A study on the palaeoecology of cave bears from three Late Pleistocene cave bear sites from Romanian Carpathians, based on stable isotope data from their teeth, is published by Robu ''et al.'' (2019).<ref>{{Cite journal|author1=Marius Robu |author2=Jonathan Wynn |author3=Cristina Montana Puşcaş |author4=Ioana Nicoleta Meleg |author5=Jeremy E. Martin |author6=Silviu Constantin |year=2019 |title=Palaeoecology and palaeoclimatic context of Romanian Carpathian MIS 3 cave bears using stable isotopes (δ<sup>13</sup>C and δ<sup>18</sup>O) |journal=Palaeogeography, Palaeoclimatology, Palaeoecology |volume=534 |pages=Article 109288 |doi=10.1016/j.palaeo.2019.109288 |bibcode=2019PPP...534j9288R |url=https://zenodo.org/record/3364889 }}</ref>
* A study on population dynamics and [[Biology:Phylogeography|phylogeography]] of cave bears during the Late Pleistocene, based on data from reconstructed cave bear mitochondrial genomes, is published by Gretzinger ''et al.'' (2019).<ref>{{Cite journal|author1=Joscha Gretzinger |author2=Martyna Molak |author3=Ella Reiter |author4=Saskia Pfrengle |author5=Christian Urban |author6=Judith Neukamm |author7=Michel Blant |author8=Nicholas J. Conard |author9=Christophe Cupillard |author10=Vesna Dimitrijević |author11=Dorothée G. Drucker |author12=Emilia Hofman-Kamińska |author13=Rafał Kowalczyk |author14=Maciej T. Krajcarz |author15=Magdalena Krajcarz |author16=Susanne C. Münzel |author17=Marco Peresani |author18=Matteo Romandini |author19=Isaac Rufí |author20=Joaquim Soler |author21=Gabriele Terlato |author22=Johannes Krause |author23=Hervé Bocherens |author24=Verena J. Schuenemann |year=2019 |title=Large-scale mitogenomic analysis of the phylogeography of the Late Pleistocene cave bear |journal=Scientific Reports |volume=9 |issue=1 |pages=Article number 10700 |doi=10.1038/s41598-019-47073-z |pmid=31417104 |pmc=6695494 |bibcode=2019NatSR...910700G }}</ref>
* A study on the evolutionary history and paleoecology of [[Biology:Brown bear|brown bear]]s in North-East Siberia, as indicated by mitochondrial DNA and stable isotopic data from [[Biology:Subfossil|subfossil]] remains from [[Biography:Yakutia|Yakutia]] ({{wipe|Russia}}), is published by Rey-Iglesia ''et al.'' (2019).<ref>{{Cite journal|author1=Alba Rey-Iglesia |author2=Ana García-Vázquez |author3=Eve C. Treadaway |author4=Johannes van der Plicht |author5=Gennady F. Baryshnikov |author6=Paul Szpak |author7=Hervé Bocherens |author8=Gennady G. Boeskorov |author9=Eline D. Lorenzen |year=2019 |title=Evolutionary history and palaeoecology of brown bear in North-East Siberia re-examined using ancient DNA and stable isotopes from skeletal remains |journal=Scientific Reports |volume=9 |issue=1 |pages=Article number 4462 |doi=10.1038/s41598-019-40168-7 |pmid=30872771 |pmc=6418263 |bibcode=2019NatSR...9.4462R }}</ref>
* A study on the morphology and taxonomical status of the Late Pleistocene [[Biology:Steppe brown bear|steppe brown bear]] is published by Marciszak ''et al.'' (2019).<ref>{{Cite journal|author1=Adrian Marciszak |author2=Charles Schouwenburg |author3=Grzegorz Lipecki |author4=Sahra Talamo |author5=Andrey Shpansky |author6=Dmitriy Malikov |author7=Wiktoria Gornig |year=2019 |title=Steppe brown bear ''Ursus arctos "priscus"'' from the Late Pleistocene of Europe |journal=Quaternary International |volume=534 |pages=158–170 |doi=10.1016/j.quaint.2019.02.042 |bibcode=2019QuInt.534..158M }}</ref>
* A study on the evolutionary history of the European brown bears in northern [[Place:Iberian Peninsula|Iberian Peninsula]] is published by García-Vázquez, Llona & Grandal-d'Anglade (2019), who report evidence indicating that the Pleistocene lineages of the Iberian brown bears were not the direct ancestors of the Holocene ones, and interpret their findings as indicative of the Holocene recolonization of the Iberian Peninsula by brown bears from a cryptic [[Biology:Refugium (population biology)|refugium]] in continental Atlantic Europe.<ref>{{Cite journal|author1=Ana García-Vázquez |author2=Ana Cristina Pinto Llona |author3=Aurora Grandal-d'Anglade |year=2019 |title=Post-glacial colonization of Western Europe brown bears from a cryptic Atlantic refugium out of the Iberian Peninsula |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=5 |pages=618–630 |doi=10.1080/08912963.2017.1384473 |s2cid=90970319 }}</ref>
* A study on the evolutionary history and changes of range and diet of the European brown bears, as indicated by data from mitochondrial DNA from brown bear remains collected from across Europe and ranging in age between the Late Pleistocene and historical times, is published by <ref>{{Cite journal|author1=Erik Ersmark |author2=Gennady Baryshnikov |author3=Thomas Higham |author4=Alain Argant |author5=Pedro Castaños |author6=Doris Döppes |author7=Mihaly Gasparik |author8=Mietje Germonpré |author9=Kerstin Lidén |author10=Grzegorz Lipecki |author11=Adrian Marciszak |author12=Rebecca Miller |author13=Marta Moreno‐García |author14=Martina Pacher |author15=Marius Robu |author16=Ricardo Rodriguez‐Varela |author17=Manuel Rojo Guerra |author18=Martin Sabol |author19=Nikolai Spassov |author20=Jan Storå |author21=Christina Valdiosera |author22=Aritza Villaluenga |author23=John R. Stewart |author24=Love Dalén |year=2019 |title=Genetic turnovers and northern survival during the last glacial maximum in European brown bears |journal=Ecology and Evolution |volume=9 |issue=10 |pages=5891–5905 |doi=10.1002/ece3.5172 |pmid=31161006 |pmc=6540696 }}</ref>
* A study on the biomechanical capabilities of the [[Biology:Musteloidea|musteloid]] species ''Leptarctus primus'' relative to living carnivoran taxa, and on their implications for inferring the paleoecology of this species, is published by Prybyla, Tseng & Flynn (2019).<ref>{{cite journal |author1=Alixandra N. Prybyla |author2=Zhijie Jack Tseng |author3=John J. Flynn |year=2019 |title=Biomechanical simulations of ''Leptarctus primus'' (Leptarctinae, Carnivora), and new evidence for a badger-like feeding capability |journal=Journal of Vertebrate Paleontology |volume=38 |issue=6 |pages=e1531290 |doi=10.1080/02724634.2018.1531290 |s2cid=91204388 |doi-access=free }}</ref>
* A revision of the systematics of fossil hog-nosed skunks from {{wipe|Argentina}} will be published by Schiaffini & Juan (2019).<ref>{{Cite journal|author1=Mauro Ignacio Schiaffini |author2=Prevosti Francisco Juan |year=2019 |title=Taxonomy and systematic of fossil hog-nosed skunks, genus ''Conepatus'' (Carnivora: Mephitidae) from Argentina |journal=Journal of South American Earth Sciences |volume=89 |pages=140–157 |doi=10.1016/j.jsames.2018.11.010 |bibcode=2019JSAES..89..140S |hdl=11336/81423 }}</ref>
* A skull of a large fossil [[Biology:Mustelidae|mustelid]] showing similarities to both ''Oriensictis melina'' from [[Earth:Zhoukoudian|Zhoukoudian]] and ''[[Biology:Enhydrictis|Enhydrictis]]'' from Sardinia is described from the Jinyuan cave (Liaoning, {{wipe|China}}) by Jiangzuo ''et al.'' (2019), who relegate ''Oriensictis'' to the rank of a subgenus of ''Enhydrictis''.<ref>{{Cite journal|author1=Qigao Jiangzuo |author2=Jinyuan Liu |author3=Changzhu Jin |author4=Yayun Song |author5=Sizhao Liu |author6=Sheng Lü |author7=Yuan Wang |author8=Jinyi Liu |year=2019 |title=Discovery of ''Enhydrictis'' (Mustelidae, Carnivora, Mammalia) cranium in Puwan, Dalian, Northeast China demonstrates repeated intracontinental migration during the Pleistocene |journal=Quaternary International |volume=513 |pages=18–29 |doi=10.1016/j.quaint.2019.01.024 |bibcode=2019QuInt.513...18J }}</ref>
* Fossil remains of a late Pleistocene European badger are described from Grotta Laceduzza (Apulia, Italy) by Mecozzi ''et al.'' (2019), representing the largest sample of this taxon in the European Pleistocene record.<ref>{{Cite journal|author1=Beniamino Mecozzi |author2=Donato Coppola |author3=Dawid A. Iurino |author4=Raffaele Sardella |author5=Anna M. De Marinis |year=2019 |title=The Late Pleistocene European badger ''Meles meles'' from Grotta Laceduzza (Brindisi, Apulia, Southern Italy): the analysis of the morphological and biometric variability |journal=The Science of Nature |volume=106 |issue=5–6 |pages=Article 13 |doi=10.1007/s00114-019-1604-2 |pmid=30945055 |bibcode=2019SciNa.106...13M |s2cid=92997298 }}</ref>
* A study aiming to determine occurrence and timing of shifts in skull shape, body size and body shape in the evolutionary history of mustelids is published by Law (2019).<ref>{{Cite journal|author=Chris J. Law |year=2019 |title=Evolutionary shifts in extant mustelid (Mustelidae: Carnivora) cranial shape, body size and body shape coincide with the Mid-Miocene Climate Transition |journal=Biology Letters |volume=15 |issue=5 |pages=Article ID 20190155 |doi=10.1098/rsbl.2019.0155 |pmid=31138097 |pmc=6548733 }}</ref>
* A study on the functional morphology of the teeth of ''[[Biology:Cyonasua|Cyonasua]]'' and ''[[Biology:Chapalmalania|Chapalmalania]]'' and on the diet of these taxa, aiming to determine whether these carnivorans may have ecologically overlapped with extinct predatory metatherians from South America, is published by Engelman & Croft (2019).<ref>{{Cite journal|author1=Russell K. Engelman |author2=Darin A. Croft |year=2019 |title=Strangers in a strange land: Ecological dissimilarity to metatherian carnivores may partly explain early colonization of South America by ''Cyonasua''-group procyonids |journal=Paleobiology |volume=45 |issue=4 |pages=598–611 |doi=10.1017/pab.2019.29 |s2cid=209308325 |doi-access=free }}</ref>
* A study on feeding strategies used by extinct [[Biology:Pinniped|pinniped]]s, as indicated by morphology of their skulls and mandibles, and on the evolution of [[Biology:Earless seal|phocid]] feeding strategies is published by Kienle & Berta (2019).<ref>{{Cite journal|author1=Sarah S. Kienle |author2=Annalisa Berta |year=2019 |title=The evolution of feeding strategies in phocid seals (Pinnipedia, Phocidae) |journal=Journal of Vertebrate Paleontology |volume=38 |issue=6 |pages=e1559172 |doi=10.1080/02724634.2018.1559172 |s2cid=109863777 }}</ref>
* A study aiming to qualitatively and quantitatively characterize the fossil record of pinnipeds from taxonomic, geographical and temporal perspectives is published by Valenzuela-Toro & Pyenson (2019).<ref>{{cite journal |author1=Ana Valenzuela-Toro |author2=Nicholas D. Pyenson |year=2019 |title=What do we know about the fossil record of pinnipeds? A historiographical investigation |journal=Royal Society Open Science |volume=6 |issue=11 |pages=Article ID 191394 |doi=10.1098/rsos.191394 |pmid=31827869 |pmc=6894555 |bibcode=2019RSOS....691394V }}</ref>
* A study on the morphological differences between [[Biology:Humerus|humeri]] and [[Biology:Femur|femora]] of different modern phocid taxa, and on their implications for the utility of these limb bones in diagnosing fossil taxa, is published by Churchill & Uhen (2019).<ref>{{Cite journal|author1=Morgan Churchill |author2=Mark D. Uhen |year=2019 |title=Taxonomic implications of morphometric analysis of earless seal limb bones |journal=Acta Palaeontologica Polonica |volume=64 |issue=2 |pages=213–230 |doi=10.4202/app.00607.2019 |doi-access=free }}</ref>
* A study on the bone [[Biology:Histology|histology]] of ''[[Biology:Nanophoca|Nanophoca]] vitulinoides'' is published by Dewaele ''et al.'' (2019).<ref>{{cite journal |author1=Leonard Dewaele |author2=Olivier Lambert |author3=Michel Laurin |author4=Tim De Kock |author5=Stephen Louwye |author6=Vivian de Buffrénil |year=2019 |title=Generalized osteosclerotic condition in the skeleton of ''Nanophoca vitulinoides'', a dwarf seal from the Miocene of Belgium |journal=Journal of Mammalian Evolution |volume=26 |issue=4 |pages=517–543 |doi=10.1007/s10914-018-9438-9 |s2cid=20885865 }}</ref>
* Miocene [[Biology:Monk seal|monk seal]] teeth are described from the upper [[Earth:Monterey Formation|Monterey Formation]] ({{wipe|California}}, {{wipe|United States}}) by Velez-Juarbe & Valenzuela-Toro (2019), representing the oldest fossil record of [[Biology:Crown group|crown]] phocids from the North Pacific region reported so far.<ref>{{cite journal |author1=Jorge Velez-Juarbe |author2=Ana M. Valenzuela-Toro |year=2019 |title=Oldest record of monk seals from the North Pacific and biogeographic implications |journal=Biology Letters |volume=15 |issue=5 |pages=Article ID 20190108 |doi=10.1098/rsbl.2019.0108 |pmid=31064312 |pmc=6548721 }}</ref>
* A study on the impact of changing sea ice conditions on the diet of the Pacific [[Biology:Walrus|walrus]] during the last ~4000 years is published by Clark ''et al.'' (2019).<ref>{{Cite journal|author1=Casey T. Clark |author2=Lara Horstmann |author3=Anne de Vernal |author4=Anne M. Jensen |author5=Nicole Misarti |year=2019 |title=Pacific walrus diet across 4000 years of changing sea ice conditions |journal=Quaternary Research |volume=in press |pages= 1–17|doi=10.1017/qua.2018.140 }}</ref>
* Description of new dentary material of ''[[Biology:Percrocuta|Percrocuta]] carnifex'' from the Nagri Formation ({{wipe|Pakistan}}), and a study on the occurrence and [[Earth:Stratigraphy|stratigraphic]] position of this species within the Sivalik Hills and on the phylogenetic relationships of species assigned to the genus ''Percrocuta'', is published by Ghaffar ''et al.'' (2019).<ref>{{Cite journal|author1=Abdul Ghaffar |author2=Muhammad Akhtar |author3=Muhammad Akbar Khan |author4=Muhammad Babar |year=2019 |title=Comments on ''Percrocuta carnifex'' based on the new fossil material from the Nagri Formation (Middle Siwaliks) Hasnot, Pakistan |journal=Geologica Acta |volume=17 |issue=3 |pages=1–9 |doi=10.1344/GeologicaActa2019.17.3 |doi-access=free }}</ref>
* A study evaluating the ability of the extinct [[Biology:Cryptoprocta spelea|giant fossa]] to hunt large lemurs is published by Meador ''et al.'' (2019).<ref>{{cite journal |author1=Lindsay Renee Meador |author2=Laurie Rohde Godfrey |author3=Jean Claude Rakotondramavo |author4=Lovasoa Ranivoharimanana |author5=Andrew Zamora |author6=Michael Reed Sutherland |author7=Mitchell T. Irwin |year=2019 |title=''Cryptoprocta spelea'' (Carnivora: Eupleridae): What Did It Eat and How Do We Know? |journal=Journal of Mammalian Evolution |volume=26 |issue=2 |pages=237–251 |doi=10.1007/s10914-017-9391-z |s2cid=22837727 }}</ref>
* Description of mongoose fossils from the early Pleistocene fossil locality Cooper 's D in the [[History:Cradle of Humankind|Cradle of Humankind]] ({{wipe|South Africa}}) is published by Cohen, O'Regan & Steininger (2019).<ref>{{Cite journal|author1=Brigette F. Cohen |author2=Hannah J. O'Regan |author3=Christine M. Steininger |year=2019 |title=Mongoose Manor: Herpestidae remains from the Early Pleistocene Cooper 's D locality in the Cradle of Humankind, Gauteng, South Africa |journal=Palaeontologia Africana |volume=53 |pages=97–113 |hdl=10539/26300 }}</ref>
* A study on the anatomy of the basicranium of ''[[Biology:Dinocrocuta|Dinocrocuta]] gigantea'' is published by Xiong (2019).<ref>{{cite journal |author=Wu-Yang Xiong |year=2019 |title=Basicranial morphology of Late Miocene ''Dinocrocuta gigantea'' (Carnivora: Hyaenidae) from Fugu, Shaanxi |journal=Vertebrata PalAsiatica |volume=57 |issue=4 |pages=274–307 |doi=10.19615/j.cnki.1000-3118.190710 |url=http://www.ivpp.cas.cn/cbw/gjzdwxb/xbwzxz/201907/t20190710_5338148.html }}</ref>
* Two isolated teeth of [[Biology:Hyena|hyena]]s belonging to the genus ''[[Biology:Chasmaporthetes|Chasmaporthetes]]'' are described from the Old Crow Basin ([[Earth:Yukon|Yukon]], {{wipe|Canada}}) by Tseng, Zazula & Werdelin (2019).<ref>{{Cite journal|author1=Z. Jack Tseng |author2=Grant Zazula |author3=Lars Werdelin |year=2019 |title=First fossils of hyenas (''Chasmaporthetes'', Hyaenidae, Carnivora) from north of the Arctic Circle |journal=Open Quaternary |volume=5 |issue=1 |pages=Article 6 |doi=10.5334/oq.64 |doi-access=free }}</ref>
* A study on the upper [[Biology:Canine tooth|canine]] replacement process in sabertooth carnivores belonging to the family [[Biology:Nimravidae|Nimravidae]] is published by Wysocki (2019), who also compares the juvenile morphologies and upper canine replacement processes in the sabertooth lineages of the families Felidae, [[Biology:Barbourofelidae|Barbourofelidae]] and Nimravidae.<ref>{{Cite journal|author=Matthew Aleksander Wysocki |year=2019 |title=Fossil evidence of evolutionary convergence in juvenile dental morphology and upper canine replacement in sabertooth carnivores |journal=Ecology and Evolution |volume=9 |issue=22 |pages=12649–12657 |doi=10.1002/ece3.5732 |pmid=31788204 |pmc=6875571 }}</ref>
* A study on the brain anatomy of an early Miocene [[Biology:Felidae|felid]] known from a skull from Ginn Quarry (Nebraska, {{wipe|United States}}), representing the oldest known felid specimen in the New World, is published by Lyras, Giannakopoulou & Werdelin (2019).<ref>{{Cite journal|author1=George A. Lyras |author2=Aggeliki Giannakopoulou |author3=Lars Werdelin |year=2019 |title=The brain anatomy of an early Miocene felid from Ginn Quarry (Nebraska, USA) |journal=PalZ |volume=93 |issue=2 |pages=345–355 |doi=10.1007/s12542-018-00444-9 |s2cid=150052167 }}</ref>
* A study on a sample of fossils of two species of ''[[Biology:Machairodus|Machairodus]]'' from the early Vallesian site of Los Valles de Fuentidueña (Province of Segovia, {{wipe|Spain}}), evaluating their implications for the knowledge of palaeoecology of these species, is published by Fernández-Monescillo, Antón & Salesa (2019).<ref>{{Cite journal|author1=Marcos Fernández-Monescillo |author2=Mauricio Antón |author3=Manuel J. Salesa |year=2019 |title=Palaeoecological implications of the sympatric distribution of two species of ''Machairodus'' (Felidae, Machairodontinae, Homotherini) in the Late Miocene of Los Valles de Fuentidueña (Segovia, Spain) |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=7 |pages=903–913 |doi=10.1080/08912963.2017.1402894 |s2cid=135103217 }}</ref>
* A study on the anatomy of the neck vertebrae of ''Machairodus aphanistus'', evaluating its implications for the knowledge of the early evolution of adaptations enabling the killing bite of the sabre-toothed cats, is published online by Antón ''et al.'' (2019).<ref>{{Cite journal|author1=Mauricio Antón |author2=Gema Siliceo |author3=Juan Francisco Pastor |author4=Jorge Morales |author5=Manuel J. Salesa |year=2019 |title=The early evolution of the sabre-toothed felid killing bite: the significance of the cervical morphology of ''Machairodus aphanistus'' (Carnivora: Felidae: Machairodontinae) |journal=Zoological Journal of the Linnean Society |volume=188 |issue=1 |pages=319–342 |doi=10.1093/zoolinnean/zlz086 }}</ref>
* Description of felid fossils recovered from bluffs along the South Saskatchewan River near Medicine Hat (Alberta, {{wipe|Canada}}), including the first confirmed occurrence of ''[[Biology:Smilodon|Smilodon]] fatalis'' in Canada, is published by Reynolds, Seymour & Evans (2019).<ref>{{cite journal |author1=Ashley R. Reynolds |author2=Kevin L. Seymour |author3=David C. Evans |year=2019 |title=Late Pleistocene records of felids from Medicine Hat, Alberta, including the first Canadian record of the sabre-toothed cat ''Smilodon fatalis'' |journal=Canadian Journal of Earth Sciences |volume=56 |issue=10 |pages=1052–1060 |doi=10.1139/cjes-2018-0272 |hdl=1807/96725 |bibcode=2019CaJES..56.1052R |hdl-access=free }}</ref>
* A study on [[Biology:Canine tooth|canines]] of ''Smilodon fatalis'', aiming to determine whether extreme canine size functioned as a sexually selected signal, is published by O'Brien (2019).<ref>{{cite journal |author=Devin M. O'Brien |year=2019 |title=Static scaling and the evolution of extreme canine size in a saber-toothed cat (''Smilodon fatalis'') |journal=Integrative and Comparative Biology |volume=59 |issue=5 |pages=1303–1311 |doi=10.1093/icb/icz054 |pmid=31120517 }}</ref>
* Two specimens of ''Smilodon populator'' with injuries on their skulls are described by Chimento ''et al.'' (2019), who interpret these injuries as most likely caused by upper [[Biology:Canine tooth|canines]] of another ''Smilodon''.<ref>{{cite journal |author1=Nicolás R. Chimento |author2=Federico L. Agnolin |author3=Leopoldo Soibelzon |author4=Javier G. Ochoa |author5=Viviana Buide |year=2019 |title=Evidence of intraspecific agonistic interactions in ''Smilodon populator'' (Carnivora, Felidae) |journal=Comptes Rendus Palevol |volume=18 |issue=4 |pages=449–454 |doi=10.1016/j.crpv.2019.02.006 |doi-access=free }}</ref>
* A felid calcaneum is described from the late Pliocene–early Pleistocene Uquía Formation ({{wipe|Argentina}}) by Ercoli ''et al.'' (2019), who assign this specimen to the [[Biology:Cougar|puma]] lineage, and interpret it as one of the earliest records of this lineage in America, and of Felidae in South America.<ref>{{cite journal |author1=Marcos Dario Ercoli |author2=Mariano A. Ramírez |author3=Miriam M. Morales |author4=Alicia Álvarez |author5=Adriana M. Candela |year=2019 |title=First record of Carnivora (puma lineage, Felidae) in the Uquía Formation (late Pliocene–early Pleistocene, NW Argentina) and its significance in the Great American Biotic Interchange |journal=Ameghiniana |volume=56 |issue=3 |pages=195–212 |doi=10.5710/AMGH.31.03.2019.3206 |s2cid=134828799 }}</ref>
* [[Biology:Tooth enamel|Tooth enamel]] [[Chemistry:Strontium|strontium]] isotopic values of a specimen of the [[Biology:American lion|American lion]] from Cedral (San Luis Potosí, Mexico) are determined by Pérez-Crespo ''et al.'' (2019), who also evaluate the implications of their findings for inferring the mobility of the studied specimen.<ref>{{Cite journal|author1=Víctor Adrián Pérez-Crespo |author2=Peter Schaaf |author3=Gabriela Solís-Pichardo |author4=Joaquín Arroyo-Cabrales |author5=José Ramón Torres-Hernández |year=2019 |title=Investigation of the mobility of American lion (''Panthera atrox'') from México (Cedral, San Luis Potosí) using Sr isotopes |journal=Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen |volume=291 |issue=3 |pages=351–357 |doi=10.1127/njgpa/2019/0806 }}</ref>
* The first fossil [[Biology:Tiger|tiger]] specimen from the Kyushu area ({{wipe|Japan}}) is reported by Hasegawa ''et al.'' (2019).<ref>{{Cite journal|author1=Yoshikazu Hasegawa |author2=Yuji Takakuwa |author3=Kumiko Nenoki |author4=Toshiyuki Kimura |year=2019 |title=Fossil tiger from limestone mine of Tsukumi City, Oita Prefecture, Kyushu Island, Japan |journal=Bulletin of Gunma Museum of Natural History |volume=23 |pages=1–11 |url=http://www.gmnh.pref.gunma.jp/wp-content/uploads/bulletin23_1.pdf }}</ref>

{| class="wikitable sortable" align="center" width="100%"
|-
! Name !! Novelty !! Status !! Authors !! Age !! Type locality !! Country !! Notes !! Images
|-
| ''[[Biology:Agriotherium|Agriotherium hendeyi]]''<ref>{{cite journal |author1=Qigao Jiangzuo |author2=John J. Flynn |year=2020 |title=A new species of ''Agriotherium'' from North America, and implications for understanding transformations in the metaconid-entoconid complex of bears |journal=Journal of Mammalian Evolution |volume=27 |issue=4 |pages=775–787 |doi=10.1007/s10914-019-09480-x |s2cid=201064589 }}</ref>
| Sp. nov
| Valid
| Jiangzuo & Flynn
| Late [[Biology:Hemphillian|Hemphillian]]
| [[Earth:Quiburis Formation|Quiburis]]
| {{Flag|United States}}<br />({{Flag|Arizona}})
| Announced in 2019; the final version of the article naming it was published in 2020.
|
|-
| ''Amblonyx barryi''<ref>{{Cite journal|author1=Qigao Jiangzuo |author2=Congyu Yu |author3=John J. Flynn |year=2019 |title=''Indarctos'' and other Caniformia fossils of G.E. Lewis' YPM collection from the Siwaliks |journal=Historical Biology: An International Journal of Paleobiology |volume=33 |issue=4 |pages=543–557 |doi=10.1080/08912963.2019.1648449 |s2cid=201211953 }}</ref>
| Sp. nov
| Valid
| Jiangzuo, Yu & Flynn
| Pliocene
| Sivalik Hills
| {{flag|Nepal}}
| A relative of the [[Biology:Asian small-clawed otter|Asian small-clawed otter]]. Announced in 2019; the final version of the article naming it was published in 2021.
|
|-
| ''[[Biology:Amphicyon|Amphicyon zhanxiangi]]''<ref>{{cite journal |author1=Qigao Jiangzuo |author2=Chunxiao Li |author3=Shiqi Wang |author4=Danhui Sun |year=2019 |title=''Amphicyon zhanxiangi'', sp. nov., a new amphicyonid (Mammalia, Carnivora) from northern China |journal=Journal of Vertebrate Paleontology |volume=38 |issue=6 |pages=e1539857 |doi=10.1080/02724634.2018.1539857 |s2cid=91998860 }}</ref>
| Sp. nov
| Valid
| Jiangzuo ''et al.''
| early [[Earth:Middle Miocene|Middle Miocene]]
|
| {{Flag|China}}
| A [[Biology:Bear dog|bear dog]]
| 
|-
| ''[[Biology:Amphimachairodus|Amphimachairodus alvarezi]]''<ref>{{Cite journal|author1=Damián Ruiz-Ramoni |author2=Ascanio D. Rincón |author3=Marisol Montellano-Ballesteros |year=2019 |title=Taxonomic revision of a Machairodontinae (Felidae) from the Late Hemphillian of México |journal=Historical Biology: An International Journal of Paleobiology |volume=32 |issue=10 |pages=1312–1319 |doi=10.1080/08912963.2019.1583750 |s2cid=91277834 }}</ref>
| Sp. nov
| Valid
| Ruiz-Ramoni, Rincón & Montellano-Ballesteros
| Late [[Biology:Hemphillian|Hemphillian]]
| 
| {{Flag|Mexico}}
| A [[Biology:Machairodontinae|machairodontine]] [[Biology:Felidae|felid]]
|
|-
| ''[[Biology:Ballusia|Ballusia zhegalloi]]''<ref>{{Cite journal|author1=Marina Sotnikova |author2=Alexey Klementiev |author3=Alexander Sizov |author4=Alexey Tesakov |year=2020 |title=New species of ''Ballusia'' Ginsburg and Morales, 1998 (Ursidae, Carnivora) from Miocene of Eastern Siberia, Russia |journal=Historical Biology: An International Journal of Paleobiology |volume=33 |issue=4 |pages=486–497 |doi=10.1080/08912963.2019.1637864 |s2cid=199637789 }}</ref>
| Sp. nov
| Valid
| Sotnikova ''et al.''
| [[Earth:Early Miocene|Early Miocene]]
| 
| {{Flag|Mongolia}}<br />{{Flag|Russia}}
| A bear. Announced in 2019; the final version of the article naming it was published in 2021.
|
|-
| ''[[Biology:Corumictis|Corumictis]]''<ref>{{cite journal |author1=Ryan Paterson |author2=Joshua X. Samuels |author3=Natalia Rybczynski |author4=Michael J Ryan |author5=Hillary C Maddin |year=2019 |title=The earliest mustelid in North America |journal=Zoological Journal of the Linnean Society |volume=188 |issue=4 |pages=1318–1339 |doi=10.1093/zoolinnean/zlz091 }}</ref>
| Gen. et sp. et comb. nov
| Valid
| Paterson ''in'' Paterson ''et al.''
| [[Earth:Oligocene|Oligocene]] ([[Earth:Arikareean|Arikareean]]) and early Miocene
| John Day
| {{Flag|France}}<br />
{{Flag|United States}}<br />({{Flag|Oregon}})
| A member of the family [[Biology:Mustelidae|Mustelidae]]. The type species is ''C. wolsani''; genus also includes ''"[[Biology:Plesictis|Plesictis]]" julieni'' {{small|Viret 1929}}.
| 
|-
| ''Cynelos anubisi''<ref>{{Cite journal|author1=Michael Morlo |author2=Ellen R. Miller |author3=Katharina Bastl |author4=Mohamed Korany AbdelGawad |author5=Mohammed Hamdan |author6=Ahmed N. El-Barkooky |author7=Doris Nagel |year=2019 |title=New Amphicyonids (Mammalia, Carnivora) from Moghra, Early Miocene, Egypt |journal=Geodiversitas |volume=41 |issue=21 |pages=731–745 |doi=10.5252/geodiversitas2019v41a21 |s2cid=208284245 |url=http://sciencepress.mnhn.fr/en/periodiques/geodiversitas/41/21 |doi-access=free }}</ref>
| Sp. nov
| Valid
| Morlo ''et al.''
| [[Earth:Early Miocene|Early Miocene]]
| 
| {{Flag|Egypt}}<br />{{Flag|Libya}}
| A [[Biology:Bear dog|bear dog]]
| 
|-
| ''[[Biology:Gobicyon|Gobicyon acutus]]''<ref name=PPGobicyon>{{Cite journal|author1=Qigao Jiangzuo |author2=Shiqi Wang |author3=Chunxiao Li |author4=Danhui Sun |author5=Xiaoxiao Zhang |year=2019 |title=New material of ''Gobicyon'' (Carnivora, Amphicyonidae, Haplocyoninae) from northern China and a review of Aktaucyonini evolution |journal=Papers in Palaeontology |volume=7 |issue=1 |pages=307–327 |doi=10.1002/spp2.1283 }}</ref>
| Sp. nov
| Valid
| Jiangzuo ''et al.''
| late [[Earth:Middle Miocene|Middle Miocene]]
| 
| {{Flag|China}}
| A [[Biology:Bear dog|bear dog]] belonging to the subfamily Haplocyoninae
| 
|-
| ''[[Biology:Gobicyon|Gobicyon yei]]''<ref name=PPGobicyon />
| Sp. nov
| Valid
| Jiangzuo ''et al.''
| early [[Earth:Middle Miocene|Middle Miocene]]
| 
| {{Flag|China}}
| A [[Biology:Bear dog|bear dog]] belonging to the subfamily Haplocyoninae
|
|-
| ''Hoplictis baihu''<ref>{{Cite journal|author1=Alberto Valenciano |author2=Qigao Jiangzuo |author3=Shiqi Wang |author4=Chunxiao Li |author5=Xiaoxiao Zhang |author6=Je Ye |year=2019 |title=First record of ''Hoplictis'' (Carnivora, Mustelidae) in East Asia from the Halamagai and Kekemaideng formations, Ulungur River area, Xinjiang, northwest China |journal=Acta Geologica Sinica (English Edition) |volume=93 |issue=2 |pages=251–264 |doi=10.1111/1755-6724.13820 |url=http://www.geojournals.cn/dzxben/ch/reader/view_abstract.aspx?file_no=2019endzxb02001&flag=1 }}</ref>
| Sp. nov
| Valid
| Valenciano ''et al.''
| [[Earth:Middle Miocene|Middle Miocene]]
| Halamagai
| {{Flag|China}}
| A member of the family [[Biology:Mustelidae|Mustelidae]]
| 
|-
| ''Izmirictis''<ref>{{Cite journal|author1=Jorge Morales |author2=Serdar Mayda |author3=Alberto Valenciano |author4=Daniel DeMiguel |author5=Tanju Kaya |year=2019 |title=A new lophocyonid, ''Izmirictis cani'' gen. et sp. nov. (Carnivora: Mammalia), from the lower Miocene of Turkey |journal=Journal of Systematic Palaeontology |volume=17 |issue=16 |pages=1347–1358 |doi=10.1080/14772019.2018.1529000 |s2cid=91268744 |url=http://zaguan.unizar.es/record/87561 |hdl=10261/223616 |hdl-access=free }}</ref>
| Gen. et sp. nov
| Valid
| Morales ''et al.''
| [[Earth:Early Miocene|Early Miocene]]
| 
| {{Flag|Turkey}}
| A member of [[Biology:Feliformia|Feliformia]] belonging to the family [[Biology:Lophocyonidae|Lophocyonidae]] (new rank, formerly ranked as the subfamily Lophocyoninae within the [[Biology:Viverridae|Viverridae]]). Genus includes new species ''I. cani''.
|
|-
| ''Lartetictis pasalarensis''<ref>{{Cite journal|author1=Alberto Valenciano |author2=Serdar Mayda |author3=Berna Alpagut |year=2019 |title=First record of ''Lartetictis'' (Carnivora, Mustelidae, Lutrinae) in Turkey from the middle Miocene hominoid locality of Paşala |journal=Historical Biology: An International Journal of Paleobiology |volume=Online edition |issue=10 |pages= 1–16|doi=10.1080/08912963.2019.1588894 |s2cid=92013654 }}</ref>
| Sp. nov
| Valid
| Valenciano, Mayda & Alpagut
| [[Earth:Middle Miocene|Middle Miocene]]
| 
| {{Flag|Turkey}}
| An [[Biology:Otter|otter]]
|
|-
| ''[[Biology:Leptofelis|Leptofelis]]''<ref>{{Cite journal|author1=Manuel J. Salesa |author2=Gema Siliceo |author3=Mauricio Antón |author4=Stéphane Peigné |author5=Jorge Morales |year=2019 |title=Functional and systematic implications of the postcranial anatomy of a late Miocene feline (Carnivora, Felidae) from Batallones-1 (Madrid, Spain) |journal=Journal of Mammalian Evolution |volume=26 |issue=1 |pages= 101–131|doi=10.1007/s10914-017-9414-9 |s2cid=19719645 |hdl=10261/225344 |hdl-access=free }}</ref>
| Gen. et comb. nov
| Valid
| Salesa ''et al.''
| Late Miocene
| 
| {{Flag|Spain}}
| A member of the family [[Biology:Felidae|Felidae]] belonging to the subfamily [[Biology:Felinae|Felinae]]; a new genus for ''"[[Biology:Styriofelis|Styriofelis]]" vallesiensis'' Salesa ''et al.'' (2012). Announced in 2017; the final version of the article naming it was published in 2019. 
|
|-
| ''[[Biology:Myacyon|?Myacyon peignei]]''<ref>{{cite journal |author=Lars Werdelin |year=2019 |title=Middle Miocene Carnivora and Hyaenodonta from Fort Ternan, western Kenya |journal=Geodiversitas |volume=41 |issue=6 |pages=267–283 |doi=10.5252/geodiversitas2019v41a6 |s2cid=146620949 |url=http://sciencepress.mnhn.fr/en/periodiques/geodiversitas/41/6 |doi-access=free }}</ref>
| Sp. nov
| Valid
| Werdelin
| Miocene ([[Earth:Serravallian|Serravallian]])
| 
| {{Flag|Kenya}}
| A [[Biology:Bear dog|bear dog]]
| 
|-
| ''Peignecyon''<ref>{{cite journal |author1=Jorge Morales |author2=Oldřich Fejfar |author3=Elmar Heizmann |author4=Jan Wagner |author5=Alberto Valenciano |author6=Juan Abella |year=2019 |title=A new Thaumastocyoninae (Amphicyonidae, Carnivora) from the early Miocene of Tuchořice, the Czech Republic |journal=Fossil Imprint |volume=75 |issue=3–4 |pages=397–411 |doi=10.2478/if-2019-0025 |s2cid=210921722 |doi-access=free }}</ref>
| Gen. et sp. nov
| Valid
| Morales ''et al.''
| [[Earth:Early Miocene|Early Miocene]]
| 
| {{Flag|Czech Republic}}
| A [[Biology:Bear dog|bear dog]] belonging to the subfamily [[Biology:Thaumastocyonini|Thaumastocyoninae]]. The type species is ''P. felinoides''.
| 
|-
| ''Peignictis''<ref name=Peignictis>{{cite journal |author1=Louis de Bonis |author2=Axelle Gardin |author3=Cécile Blondel |year=2019 |title=Carnivora from the early Oligocene of the 'Phosphorites du Quercy' in southwestern France |journal=Geodiversitas |volume=41 |issue=15 |pages=601–621 |doi=10.5252/geodiversitas2019v41a15 |s2cid=202670809 |url=http://sciencepress.mnhn.fr/en/periodiques/geodiversitas/41/15 |doi-access=free }}</ref>
| Gen. et sp. nov
| Valid
| De Bonis, Gardin & Blondel
| Early Oligocene
| [[Earth:Quercy Phosphorites Formation|Quercy]]
| {{Flag|France}}
| A member of Mustelida of uncertain phylogenetic placement. The type species is ''P. pseudamphictis''.
| 
|-
| ''Trochictis peignei''<ref>{{Cite journal|author1=Michael Morlo |author2=Anne Le Maitre |author3=Katharina Bastl |author4=Thomas Engel |author5=Herbert Lutz |author6=Bastian Lischewsky |author7=Axel von Berg |author8=Doris Nagel |year=2019 |title=First record of the mustelid ''Trochictis'' (Carnivora, Mammalia) from the early Late Miocene (MN 9/10) of Germany and a re-appraisal of the genus ''Trochictis'' |journal=Historical Biology: An International Journal of Paleobiology |volume=33 |issue=8 |pages=1183–1195 |doi=10.1080/08912963.2019.1683172 |s2cid=209607263 }}</ref>
| Sp. nov
| Valid
| Morlo ''et al.''
| Miocene
| 
| {{Flag|Germany}}
| A member of the family [[Biology:Mustelidae|Mustelidae]]. Announced in 2019; the final version of the article naming it was published in 2021.
| 
|-
| ''Wangictis''<ref name=Peignictis />
| Gen. et comb. nov
| Valid
| De Bonis, Gardin & Blondel
| Early Oligocene
| Wulanbulage
| {{Flag|China}}
| A member of Amphicynodontinae. The type species is ''"Pachycynodon" tedfordi'' Wang & Qiu (2003).
| 
|-
|}

===Rodents===
* A study on the upper incisors of extant southern African rodents, evaluating whether the [[Biology:Morphology|morphology]] of isolated rodent incisors can be used to provide dietary information, is published by Paine ''et al.'' (2019), who also apply their dietary model to fossil rodent incisors from the {{wipe|South Africa}}n hominin-bearing sites [[Earth:Sterkfontein|Sterkfontein]] and Swartkrans.<ref>{{Cite journal|author1=Oliver C. C. Paine |author2=Jennifer N. Leichliter |author3=Nico Avenant |author4=Daryl Codron |author5=Austin Lawrence |author6=Matt Sponheimer |year=2019 |title=The ecomorphology of southern African rodent incisors: Potential applications to the hominin fossil record |journal=PLOS ONE |volume=14 |issue=2 |pages=e0205476 |doi=10.1371/journal.pone.0205476 |pmid=30785886 |pmc=6382097 |bibcode=2019PLoSO..1405476P |doi-access=free }}</ref>
* A study on the anatomy and affinities of rodent teeth from the early Miocene sites of Napak (Uganda) and on probable diets of rodents from these sites is published by Bento Da Costa ''et al.'' (2019).<ref>{{Cite journal|author1=Laura Bento Da Costa |author2=Brigitte Senut |author3=Dominique Gommery |author4=Martin Pickford |year=2019 |title=Dental remains of Lower Miocene small rodents from Napak (Uganda): Afrocricetodontidae, Myophiomyidae, Kenyamyidae and Sciuridae |journal=Annales de Paléontologie |volume=105 |issue=2 |pages=155–167 |doi=10.1016/j.annpal.2019.04.001 }}</ref>
* A study on the phylogenetic relationships of extant and fossil [[Biology:Caviomorpha|caviomorph]] rodents is published by Boivin, Marivaux & Antoine (2019), who name new clades Erethicavioi Boivin and Octochinchilloi Boivin.<ref name=Maquiamys>{{Cite journal|author1=Myriam Boivin |author2=Laurent Marivaux |author3=Pierre-Olivier Antoine |year=2019 |title=New insight from the Paleogene record of Amazonia into the early diversification of Caviomorpha (Hystricognathi, Rodentia): phylogenetic, macroevolutionary, and paleobiogeographic implications |journal=Geodiversitas |volume=41 |issue=4 |pages=143–245 |doi=10.5252/geodiversitas2019v41a4 |s2cid=135427987 |url=http://sciencepress.mnhn.fr/en/periodiques/geodiversitas/41/4 |doi-access=free }}</ref>
* A study on the [[Biology:Tooth enamel|enamel]] [[Physics:Microstructure|microstructure]] of the incisors of caviomorph rodents from the [[Earth:Eocene|Eocene]] and [[Earth:Oligocene|Oligocene]] localities in Peruvian Amazon is published by Boivin ''et al.'' (2019).<ref>{{Cite journal|author1=Myriam Boivin |author2=Laurent Marivaux |author3=Rodolfo Salas-Gismondi |author4=Emma C. Vieytes |author5=Pierre-Olivier Antoine |year=2019 |title=Incisor enamel microstructure of Paleogene caviomorph rodents from Contamana and Shapaja (Peruvian Amazonia) |journal=Journal of Mammalian Evolution |volume=26 |issue=3 |pages=389–406 |doi=10.1007/s10914-018-9430-4 |s2cid=3408734 |url=https://hal.umontpellier.fr/hal-01813140/document }}</ref>
* A study on the anatomy of three [[Biology:Tarsus (skeleton)|tarsal]] bones of Eocene caviomorph rodents from Peruvian Amazon, and on their implications for inferring the locomotor behaviors of these rodents, is published by Boivin ''et al.'' (2019).<ref>{{Cite journal|author1=Myriam Boivin |author2=Samuel Ginot |author3=Laurent Marivaux |author4=Ali J. Altamirano-Sierra |author5=François Pujos |author6=Rodolfo Salas-Gismondi |author7=Julia V. Tejada-Lara |author8=Pierre-Olivier Antoine |year=2019 |title=Tarsal morphology and locomotor adaptation of some late middle Eocene caviomorph rodents from Peruvian Amazonia reveal early ecological diversity |journal=Journal of Vertebrate Paleontology |volume=38 |issue=6 |pages=e1555164 |doi=10.1080/02724634.2018.1555164 |s2cid=91786428 }}</ref>
* New fossils of caviomorph rodents are described from the [[Earth:Paleogene|Paleogene]] of the vicinity of the cities of Juanjui and Balsayacu (Peruvian Amazonia) by Assemat ''et al.'' (2019).<ref>{{cite journal |author1=Alexandre Assemat |author2=Myriam Boivin |author3=Laurent Marivaux |author4=François Pujos |author5=Aldo Benites-Palomino |author6=Rodolfo Salas-Gismondi |author7=Julia V. Tejada-Lara |author8=Rafael M. Varas-Malca |author9=Francisco Ricardo Negri |author10=Ana Maria Ribeiro |author11=Pierre-Olivier Antoine |year=2019 |title=Restes inédits de rongeurs caviomorphes du Paléogène de la région de Juanjui (Amazonie péruvienne) : systématique, implications macro-évolutives et biostratigraphiques |journal=Geodiversitas |volume=41 |issue=20 |pages=699–730 |doi=10.5252/geodiversitas2019v41a20 |s2cid=210611683 |url=http://sciencepress.mnhn.fr/en/periodiques/geodiversitas/41/20 |doi-access=free }}</ref>
* A study on the morphology of the limb bones of caviomorph rodents from the Miocene Santa Cruz Formation of [[Place:Patagonia|Patagonia]], and on its implications for interpreting the use of substrate by these rodents, is published by Muñoz ''et al.'' (2019).<ref>{{Cite journal|author1=Nahuel A. Muñoz |author2=Néstor Toledo |author3=Adriana M. Candela |author4=Sergio F. Vizcaíno |year=2019 |title=Functional morphology of the forelimb of Early Miocene caviomorph rodents from Patagonia |journal=Lethaia |volume=52 |issue=1 |pages=91–106 |doi=10.1111/let.12292 }}</ref>
* A study on the evolution of the variation of the mandibular shape in caviomorph rodents is published online by Álvarez, Ercoli & Verzi (2019).<ref>{{Cite journal|author1=Alicia Álvarez |author2=Marcos D. Ercoli |author3=Diego H. Verzi |year=2019 |title=Integration and diversity of the caviomorph mandible (Rodentia: Hystricomorpha): assessing the evolutionary history through fossils and ancestral shape reconstructions |journal=Zoological Journal of the Linnean Society |volume=188 |issue=1 |pages=276–301 |doi=10.1093/zoolinnean/zlz071 }}</ref>
* A study on the enamel microstructure of the incisors of the [[Biology:Hystricognathi|hystricognaths]] and anomaluroids from the [[Earth:Oligocene|Oligocene]] of Western Sahara is published by Marivaux ''et al.'' (2019).<ref>{{Cite journal|author1=Laurent Marivaux |author2=Myriam Boivin |author3=Sylvain Adnet |author4=Mohamed Benammi |author5=Rodolphe Tabuce |author6=Mouloud Benammi |year=2019 |title=Incisor enamel microstructure of hystricognathous and anomaluroid rodents from the earliest Oligocene of Dakhla, Atlantic Sahara (Morocco) |journal=Journal of Mammalian Evolution |volume=26 |issue=3 |pages=373–388 |doi=10.1007/s10914-017-9426-5 |s2cid=25573848 |url=https://hal.umontpellier.fr/hal-01813145/file/JOMM-D-17-00053_R2.pdf }}</ref>
* A study on the phylogenetic relationships and evolutionary history of early hystricognaths is published by Marivaux & Boivin (2019).<ref>{{Cite journal|author1=Laurent Marivaux |author2=Myriam Boivin |year=2019 |title=Emergence of hystricognathous rodents: Palaeogene fossil record, phylogeny, dental evolution and historical biogeography |journal=Zoological Journal of the Linnean Society |volume=187 |issue=3 |pages=929–964 |doi=10.1093/zoolinnean/zlz048 |url=https://hal.umontpellier.fr/hal-02263901/file/ZJLS-system_appendPDF_proof_hi-R2.pdf }}</ref>
* A study on the [[Biology:Morphology|morphology]] of the lower deciduous premolars of extant and fossil caviomorph rodents and its implications for inferring the phylogenetic relationships of fossil caviomorphs is published by Verzi, Olivares & Morgan (2019), who argue that [[Earth:Eocene|Eocene]] genus ''[[Biology:Cachiyacuy|Cachiyacuy]]'' might be a [[Biology:Crown group#Stem groups|stem]]-octodontoid.<ref>{{Cite journal|author1=Diego H. Verzi |author2=A. Itatí Olivares |author3=Cecilia C. Morgan |year=2019 |title=Morphology of the lower deciduous premolars of South American hystricomorph rodents and age of the Octodontoidea |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=9 |pages=1170–1178 |doi=10.1080/08912963.2018.1427089 |s2cid=89881481 }}</ref>
* A study on the anatomy and phylogenetic relationships of the [[Biology:Dolichotinae|dolichotine]] [[Biology:Caviidae|caviid]] rodent ''Prodolichotis prisca'' is published by Madozzo-Jaén (2019).<ref>{{Cite journal|author=María Carolina Madozzo-Jaén |year=2019 |title=Systematic and phylogeny of ''Prodolichotis prisca'' (Caviidae, Dolichotinae) from the Northwest of Argentina (late Miocene–early Pliocene): Advances in the knowledge of the evolutionary history of maras |journal=Comptes Rendus Palevol |volume=18 |issue=1 |pages=33–50 |doi=10.1016/j.crpv.2018.07.003 |doi-access=free }}</ref>
* Description of a well-preserved skull of ''[[Biology:Telicomys|Telicomys]] giganteus'', estimation of body mass and analysis of the bite mechanics of this species is published by Rinderknecht ''et al.'' (2019).<ref>{{Cite journal|author1=Andrés Rinderknecht |author2=Washington W. Jones |author3=Ney Araújo |author4=Gustavo Grinspan |author5=R. Ernesto Blanco |year=2019 |title=Bite force and body mass of the fossil rodent ''Telicomys giganteus'' (Caviomorpha, Dinomyidae) |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=5 |pages=644–652 |doi=10.1080/08912963.2017.1384475 |s2cid=89876784 }}</ref>
* A study on the [[Biology:Morphology|morphology]] of the [[Medicine:Ossicles|ossicles]] of the extinct [[Biology:Neoepiblemidae|neoepiblemid]] rodent ''[[Biology:Perimys|Perimys]]'' and of extant and extinct caviomorph rodents in general is published by Kerber & Sánchez-Villagra (2019).<ref>{{Cite journal|author1=Leonardo Kerber |author2=Marcelo R. Sánchez-Villagra |year=2019 |title=Morphology of the middle ear ossicles in the rodent ''Perimys'' (Neoepiblemidae) and a comprehensive anatomical and morphometric study of the phylogenetic transformations of these structures in caviomorphs |journal=Journal of Mammalian Evolution |volume=26 |issue=3 |pages=407–422 |doi=10.1007/s10914-017-9422-9 |s2cid=43212461 }}</ref>
* A study on the morphology of cheek teeth, teeth replacement and systematics of members of the genus ''Neoepiblema'' is published by Kerber, Negri & Sanfelice (2019).<ref>{{Cite journal|author1=Leonardo Kerber |author2=Francisco Ricardo Negri |author3=Daniela Sanfelice |year=2019 |title=Morphology of cheek teeth and dental replacement in the extinct rodent ''Neoepiblema'' Ameghino, 1889 (Caviomorpha, Chinchilloidea, Neoepiblemidae) |journal=Journal of Vertebrate Paleontology |volume=38 |issue=6 |pages=e1549061 |doi=10.1080/02724634.2018.1549061 |s2cid=91674686 }}</ref>
* A study on the anatomy of the skull of ''Neoepiblema acreensis'' is published by Kerber, Ferreira & Negri (2019).<ref>{{Cite journal|author1=Leonardo Kerber |author2=José D. Ferreira |author3=Francisco R. Negri |year=2019 |title=A reassessment of the cranial morphology of ''Neoepiblema acreensis'' (Rodentia: Chinchilloidea), a Miocene rodent from South America |journal=Journal of Morphology |volume=280 |issue=12 |pages=1821–1838 |doi=10.1002/jmor.21067 |pmid=31633247 |s2cid=204815185 }}</ref>
* A study on the morphology of upper molars of extant and fossils members of Chinchilloidea, and on the phylogenetic relationships of members of this group, is published by Rasia & Candela (2019).<ref>{{cite journal |author1=Luciano Luis Rasia |author2=Adriana M. Candela |year=2019 |title=Upper molar morphology, homologies and evolutionary patterns of chinchilloid rodents (Mammalia, Caviomorpha) |journal=Journal of Anatomy |volume=234 |issue=1 |pages=50–65 |doi=10.1111/joa.12895 |pmid=30402944 |pmc=6284437 }}</ref>
* Description of a new specimen of ''Litodontomys'' from the [[Earth:Deseadan|Deseadan]] of {{wipe|Argentina}} and a study on the phylogenetic relationships of this taxon is published by Busker & Dozo (2019).<ref>{{cite journal |author1=Felipe Busker |author2=María Teresa Dozo |year=2019 |title=Rediscovering a forgotten rodent of Patagonia and its phylogenetic implications |journal=Journal of Systematic Palaeontology |volume=17 |issue=9 |pages=759–773 |doi=10.1080/14772019.2018.1457727 |s2cid=89890539 }}</ref>
* Nine virtual skull [[Biology:Endocast|endocast]]s of members of the family Ischyromyidae (members of the genera ''[[Biology:Pseudotomus|Pseudotomus]]'', ''Notoparamys'', ''Reithroparamys'' and ''Rapamys'') are reconstructed by Bertrand ''et al.'' (2019).<ref>{{Cite journal|author1=Ornella C. Bertrand |author2=Farrah Amador-Mughal |author3=Madlen M. Lang |author4=Mary T. Silcox |year=2019 |title=New virtual endocasts of Eocene Ischyromyidae and their relevance in evaluating neurological changes occurring through time in Rodentia |journal=Journal of Mammalian Evolution |volume=26 |issue=3 |pages=345–371 |doi=10.1007/s10914-017-9425-6 |s2cid=33820671 }}</ref>
* Description of the skull anatomy of the [[Earth:Pleistocene|Pleistocene]] ground squirrel ''"Urocitellus" nogaici'' and a study on the phylogenetic relationships of this species and other European ground squirrel species previously attributed to ''[[Biology:Urocitellus|Urocitellus]]'' is published by Sinitsa, Pogodina & Кryuchkova (2019), who transfer ''"U." nogaici'', ''"U." polonicus'' and ''"U." primigenius'' to the genus ''[[Biology:Spermophilus|Spermophilus]]''.<ref>{{Cite journal|author1=Maxim V. Sinitsa |author2=Natalia V. Pogodina |author3=Lyudmila Y. Кryuchkova |year=2019 |title=The skull of ''Spermophilus nogaici'' (Rodentia: Sciuridae: Xerinae) and the affinities of the earliest Old World ground squirrels |journal=Zoological Journal of the Linnean Society |volume=186 |issue=3 |pages=826–864 |doi=10.1093/zoolinnean/zly092 }}</ref>
* A study on the living and extinct species of ''[[Biology:Spermophilus|Spermophilus]]'' from Europe, focusing on factors affecting species distribution and speciation, is published by Popova ''et al.'' (2019).<ref>{{cite journal |author1=L.V. Popova |author2=L.C. Maul |author3=I.V. Zagorodniuk |author4=Yu.M. Veklych |author5=P.S. Shydlovskiy |author6=N.V. Pogodina |author7=K.M. Bondar |author8=T.V. Strukova |author9=S.A. Parfitt |year=2019 |title='Good fences make good neighbours': Concepts and records of range dynamics in ground squirrels and geographical barriers in the Pleistocene of the Circum-Black Sea area |journal=Quaternary International |volume=509 |pages=103–120 |doi=10.1016/j.quaint.2018.03.023 |bibcode=2019QuInt.509..103P |url=http://discovery.ucl.ac.uk/10073170/ }}</ref>
* New specimen of ''[[Biology:Trogontherium|Trogontherium]] cuvieri'' is described from the upper Pleistocene of the Songhua River drainage area near Harbin (Heilongjiang, {{wipe|China}}) by Yang ''et al.'' (2019), documenting the survival of this species into the late Pleistocene in northeast China.<ref>{{Cite journal|author1=Yangheshan Yang |author2=Qiang Li |author3=Łucja Fostowicz-Frelik |author4=Xijun Ni |year=2019 |title=Last record of ''Trogontherium cuvieri'' (Mammalia, Rodentia) from the late Pleistocene of China |journal=Quaternary International |volume=513 |pages=30–36 |doi=10.1016/j.quaint.2019.01.025 |bibcode=2019QuInt.513...30Y }}</ref>
* A study on the ecology of [[Biology:Castoroides|giant beavers]], as indicated by stable isotope data, is published by Plint, Longstaffe & Zazula (2019).<ref>{{Cite journal|author1=Tessa Plint |author2=Fred J. Longstaffe |author3=Grant Zazula |year=2019 |title=Giant beaver palaeoecology inferred from stable isotopes |journal=Scientific Reports |volume=9 |issue=1 |pages=Article number 7179 |doi=10.1038/s41598-019-43710-9 |pmid=31073145 |pmc=6509321 |bibcode=2019NatSR...9.7179P }}</ref>
* Coster ''et al.'' (2019) describe a well-preserved [[Biology:Talus bone|astragalus]] of the anomaluroid ''Pondaungimys anomaluropsis'' from the [[Earth:Eocene|Eocene]] Pondaung Formation (Myanmar), and evaluate its implications for inferring the anatomy and phylogenetic relationships of this species.<ref>{{Cite journal|author1=Pauline M. Coster |author2=Aung Naing Soe |author3=K. Christopher Beard |author4=Yaowalak Chaimanee |author5=Chit Sein |author6=Vincent Lazzari |author7=Jean-Jacques Jaeger |year=2019 |title=Astragalus of ''Pondaungimys'' (Rodentia, Anomaluroidea) from the late middle Eocene Pondaung Formation, central Myanmar |journal=Journal of Vertebrate Paleontology |volume=38 |issue=6 |pages=e1552156 |doi=10.1080/02724634.2018.1552156 |s2cid=92284165 }}</ref>
* A study on impact of climate changes on the populations of the [[Biology:Bushy-tailed woodrat|bushy-tailed woodrat]] in western North America over the late Quaternary is published by Balk, Betancourt & Smith (2019).<ref>{{Cite journal|author1=Meghan A. Balk |author2=Julio L. Betancourt |author3=Felisa A. Smith |year=2019 |title=Investigating (a)symmetry in a small mammal's response to warming and cooling events across western North America over the late Quaternary |journal=Quaternary Research |volume=92 |issue=2 |pages=408–415 |doi=10.1017/qua.2019.13 |bibcode=2019QuRes..92..408B |s2cid=181661962 }}</ref>
* A study on the evolutionary change in body mass and correlated ecological variables over the 3.75 million year history of the North American [[Biology:Muskrat|muskrat]] is published by Martin (2019).<ref>{{Cite journal|author=Robert A. Martin |year=2019 |title=Body mass and correlated ecological variables in the North American muskrat lineage: evolutionary rates and the tradeoff of large size and speciation potential |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=5 |pages=631–643 |doi=10.1080/08912963.2017.1384474 |s2cid=90042885 }}</ref>
* A study on the morphological variation in Middle to Late Pleistocene populations of the [[Biology:Common vole|common vole]] and the [[Biology:Field vole|field vole]] from northern [[Place:Iberian Peninsula|Iberian Peninsula]] and southern {{wipe|France}} is published by Luzi & López-García (2019).<ref>{{Cite journal|author1=Elisa Luzi |author2=Juan Manuel López-García |year=2019 |title=Patterns of variation in ''Microtus arvalis'' and ''Microtus agrestis'' populations from Middle to Late Pleistocene in southwestern Europe |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=5 |pages=535–543 |doi=10.1080/08912963.2017.1375490 |s2cid=90573906 }}</ref>
* Lyman (2019) describes four molars of the [[Biology:Water vole (North America)|water vole]] from the late [[Earth:Holocene|Holocene]] Stemilt Creek Village archaeological site ({{wipe|Washington (state)}}, United States), and evaluates the implications of this finding for reconstructions of local environment in prehistoric times.<ref>{{Cite journal|author=R. Lee Lyman |year=2019 |title=Paleoecological implications of the first prehistoric record of water vole (''Microtus richardsoni'') from Washington state, USA |journal=Quaternary Research |volume=92 |issue=2 |pages=381–387 |doi=10.1017/qua.2019.15 |bibcode=2019QuRes..92..381L |s2cid=155295120 }}</ref>
* A study on melanin pigment distribution in 3-million-year-old specimens of the Old World field mouse species ''Apodemus atavus'' is published by Manning ''et al.'' (2019).<ref>{{Cite journal|author1=Phillip L. Manning |author2=Nicholas P. Edwards |author3=Uwe Bergmann |author4=Jennifer Anné |author5=William I. Sellers |author6=Arjen van Veelen |author7=Dimosthenis Sokaras |author8=Victoria M. Egerton |author9=Roberto Alonso-Mori |author10=Konstantin Ignatyev |author11=Bart E. van Dongen |author12=Kazumasa Wakamatsu |author13=Shosuke Ito |author14=Fabien Knoll |author15=Roy A. Wogelius |year=2019 |title=Pheomelanin pigment remnants mapped in fossils of an extinct mammal |journal=Nature Communications |volume=10 |issue=1 |pages=Article number 2250 |doi=10.1038/s41467-019-10087-2 |pmid=31113945 |pmc=6529433 |bibcode=2019NatCo..10.2250M }}</ref>
* A study on the diet, habitat and timing and cause of extinction of the [[Biology:Tenerife giant rat|Tenerife giant rat]] (''Canariomys bravoi'') is published by Crowley ''et al.'' (2019).<ref>{{cite journal |author1=Brooke Erin Crowley |author2=Yurena Yanes |author3=Stella Grace Mosher |author4=Juan Carlos Rando |year=2019 |title=Revisiting the foraging ecology and extinction history of two endemic vertebrates from Tenerife, Canary Islands |journal=Quaternary |volume=2 |issue=1 |pages=Article 10 |doi=10.3390/quat2010010 |doi-access=free }}</ref>
* Three molar fossils of the [[Biology:Greater bandicoot rat|greater bandicoot rat]] are described from the Middle Pleistocene of Taiwan by Kawamura, Chang & Kawamura (2019), indicating that this species inhabited Taiwan in the early Middle Pleistocene.<ref>{{Cite journal|author1=Ai Kawamura |author2=Chun-Hsiang Chang |author3=Yoshinari Kawamura |year=2019 |title=The earliest fossil record of the bandicoot rat (''Bandicota indica'') from the early Middle Pleistocene of Taiwan with discussion on the quaternary history of the species |journal=Quaternary International |volume=523 |pages=37–45 |doi=10.1016/j.quaint.2019.06.012 |bibcode=2019QuInt.523...37K }}</ref>
* A study on variations of size of fossil [[Biology:Murinae|murine]] rodents from Liang Bua (Flores, Indonesia) through time, and on their implications for reconstructions of paleoclimate and paleoenvironment of Flores, is published by Veatch ''et al.'' (2019).<ref>{{cite journal |author1=E. Grace Veatch |author2=Matthew W. Tocheri |author3=Thomas Sutikna |author4=Kate McGrath |author5=E. Wahyu Saptomo |author6=Jatmiko |author7=Kristofer M. Helgen |year=2019 |title=Temporal shifts in the distribution of murine rodent body size classes at Liang Bua (Flores, Indonesia) reveal new insights into the paleoecology of ''Homo floresiensis'' and associated fauna |journal=Journal of Human Evolution |volume=130 |pages=45–60 |doi=10.1016/j.jhevol.2019.02.002 |pmid=31010543 |doi-access=free }}</ref>
* A study on the [[Biology:Femur|femur]] [[Biology:Histology|histology]] of an extinct (late Quaternary) form of Timorese giant rat is published by Miszkiewicz, Louys & O'Connor (2019).<ref>{{cite journal |author1=Justyna J. Miszkiewicz |author2=Julien Louys |author3=Sue O'Connor |year=2019 |title=Microanatomical record of cortical bone remodeling and high vascularity in a fossil giant rat midshaft femur |journal=The Anatomical Record |volume=302 |issue=11 |pages=1934–1940 |doi=10.1002/ar.24224 |pmid=31265766 |s2cid=195786436 |doi-access=free }}</ref>

{| class="wikitable sortable" align="center" width="100%"
|-
! Name !! Novelty !! Status !! Authors !! Age !! Type locality !! Country !! Notes !! Images
|-
| ''Altasciurus leonardi''<ref name=SCP103>{{cite journal |author1=William W. Korth |author2=Robert J. Emry |author3=Clint A. Boyd |author4=Jeff J. Person |year=2019 |title=Rodents (Mammalia) from Fitterer Ranch, Brule Formation (Oligocene), North Dakota |journal=Smithsonian Contributions to Paleobiology |volume=103 |issue=103 |pages=iv-45 |doi=10.5479/si.1943-6688.103 |doi-access=free }}</ref>
| Sp. nov
| Valid
| Korth ''et al.''
| [[Earth:Oligocene|Oligocene]]
| Brule
| {{Flag|United States}}<br />({{Flag|North Dakota}})
| A member of the family [[Biology:Aplodontiidae|Aplodontiidae]] belonging to the subfamily Prosciurinae
| 
|-
| ''Aplodontia minor''<ref name=JVPAplodontiinae>{{Cite journal|author=Samantha S. B. Hopkins |year=2019 |title=Phylogeny, systematics, and evolution of hypsodonty in the Aplodontiinae (Mammalia, Rodentia, Aplodontiidae), with the description of several new species |journal=Journal of Vertebrate Paleontology |volume=39 |issue=4 |pages=e1668401 |doi=10.1080/02724634.2019.1668401 |s2cid=209439990 }}</ref>
| Sp. nov
| Valid
| Hopkins
| Late [[Biology:Hemphillian|Hemphillian]]
| 
| {{Flag|United States}}<br />({{Flag|Oregon}})
| A relative of the mountain beaver
| 
|-
| ''Borsodia prechinensis''<ref name=VPZhengetal>{{cite journal |author1=Shao-Hua Zheng |author2=Ying-Qi Zhang |author3=Ning Cui |year=2019 |title=Five new species of Arvicolinae and Myospalacinae from the Late Pliocene-Early Pleistocene of Nihewan Basin |journal=Vertebrata PalAsiatica |volume=57 |issue=4 |pages=308–324 |doi=10.19615/j.cnki.1000-3118.190725 }}</ref>
| Sp. nov
| Valid
| Zheng, Zhang & Cui
| Late Pliocene−[[Earth:Early Pleistocene|Early Pleistocene]]
| Nihewan
| {{Flag|China}}
| A member of [[Biology:Arvicolinae|Arvicolinae]]
| 
|-
| ''Capromys pilorides lewisi''<ref name=BAMNH428>{{Cite journal|author1=Gary S. Morgan |author2=Ross D.E. Macphee |author3=Roseina Woods |author4=Samuel T. Turvey |year=2019 |title=Late Quaternary fossil mammals from the Cayman Islands, West Indies |journal=Bulletin of the American Museum of Natural History |volume=2019 |issue=428 |pages=1–82 |doi=10.1206/0003-0090.428.1.1 |hdl=2246/6928 |s2cid=92503421 }}</ref>
| Subsp. nov
| Valid
| Morgan ''et al.''
| [[Earth:Late Pleistocene|Late Pleistocene]]-[[Earth:Holocene|Holocene]]
| 
| {{Flag|Cayman Islands}}
| A subspecies of Desmarest's hutia
| 
|-
| ''Cardiatherium calingastaense''<ref>{{Cite journal|author1=Esperanza Cerdeño |author2=María E. Pérez |author3=Cecilia M. Deschamps |author4=Víctor H. Contreras |year=2019 |title=A new capybara from the late Miocene of San Juan Province, Argentina, and its phylogenetic implications |journal=Acta Palaeontologica Polonica |volume=64 |issue=1 |pages=199–212 |doi=10.4202/app.00544.2018 |doi-access=free }}</ref>
| Sp. nov
| Valid
| Cerdeño ''et al.''
| Late Miocene
| Las Flores
| {{Flag|Argentina}}
| A relative of the [[Biology:Capybara|capybara]]. Announced in 2018; the final version of the article naming it was published in 2019.
| APP
|-
| ''"Cricetodon" venczeli''<ref>{{cite journal |author1=János Hír |author2=Vlad Codrea |author3=Jérôme Prieto |year=2020 |title=Two new early Sarmatian s. str. (latest middle Miocene) rodent faunas from the Carpathian Basin |journal=Palaeobiodiversity and Palaeoenvironments |volume=100 |issue=3 |pages=849–902 |doi=10.1007/s12549-019-00399-y |s2cid=134949080 }}</ref>
| Sp. nov
| Valid
| Hír, Codrea & Prieto
| Miocene
| 
| {{Flag|Romania}}
| A large hamster. Announced in 2019; the final version of the article naming it was published in 2020.
|
|-
| ''Deperetomys calefactus''<ref name=PPDeperetomys>{{cite journal |author1=Zoran Marković |author2=Hans de Bruijn |author3=Andrew A. van de Weerd |author4=Wilma Wessels |year=2019 |title=''Deperetomys'' (Rodentia, Muridae) from the Oligocene of Serbia and Bosnia and Herzegovina |journal=Palaeobiodiversity and Palaeoenvironments |volume=100 |issue=3 |pages=821–840 |doi=10.1007/s12549-019-00389-0 |s2cid=204887178 |doi-access=free }}</ref>
| Sp. nov
| Valid
| Marković ''et al.''
| Late Oligocene
| 
| {{Flag|Bosnia and Herzegovina}}
| A member of Cricetodontinae
|
|-
| ''Deperetomys saltensis''<ref name=PPDeperetomys />
| Sp. nov
| Valid
| Marković ''et al.''
| Late Oligocene
|
| {{Flag|Serbia}}
| A member of Cricetodontinae
|
|-
| ''Eumys lammersi''<ref name=SCP103 />
| Sp. nov
| Valid
| Korth ''et al.''
| [[Earth:Oligocene|Oligocene]]
| Brule
| {{Flag|United States}}<br />({{Flag|North Dakota}})
| A member of the family [[Biology:Cricetidae|Cricetidae]]
| 
|-
| ''Geocapromys caymanensis''<ref name=BAMNH428 />
| Sp. nov
| Valid
| Morgan ''et al.''
| [[Earth:Late Pleistocene|Late Pleistocene]]-[[Earth:Holocene|Holocene]]
| 
| {{Flag|Cayman Islands}}
| A species of ''[[Biology:Geocapromys|Geocapromys]]''
| 
|-
| ''Gobiocylindrodon''<ref>{{Cite journal|author1=Qian Li |author2=Yuan Q. Wang |author3=Fang Y. Mao |author4=Jin Meng |year=2019 |title=A new Eocene cylindrodontid rodent from the Erlian Basin (Nei Mongol, China) and its implications for phylogeny and biochronology |journal=Journal of Vertebrate Paleontology |volume=39 |issue= 5|pages=e1680990 |doi=10.1080/02724634.2019.1680990 |s2cid=213073132 }}</ref>
| Gen. et sp. nov
| In press
| Li ''et al.''
| [[Earth:Eocene|Eocene]]
| Erlian
| {{Flag|China}}
| A member of the family Cylindrodontidae. Genus includes new species ''G. ulausuensis''.
| 
|-
| ''Heliscomys borealis''<ref name=SCP103 />
| Sp. nov
| Valid
| Korth ''et al.''
| [[Earth:Oligocene|Oligocene]]
| Brule
| {{Flag|United States}}<br />({{Flag|North Dakota}})
| A member of the family [[Biology:Heliscomyidae|Heliscomyidae]]
| 
|-
| ''Heterocricetodon serbicus''<ref name=PPPseudocricetodontinae>{{Cite journal|author1=Zoran Marković |author2=Wilma Wessels |author3=Andrew A. van de Weerd |author4=Hans de Bruijn |year=2019 |title=Pseudocricetodontinae (Mammalia, Rodentia) from the Paleogene of south-east Serbia |journal=Palaeobiodiversity and Palaeoenvironments |volume=100 |issue=1 |pages=251–267 |doi=10.1007/s12549-019-00373-8 |s2cid=201724955 |doi-access=free }}</ref>
| Sp. nov
| Valid
| Marković ''et al.''
| [[Earth:Oligocene|Oligocene]]
| 
| {{Flag|Serbia}}
| A member of the family [[Biology:Muridae|Muridae]] belonging to the subfamily Pseudocricetodontinae
|
|-
| ''Japaneomys''<ref>{{Cite journal|author1=Yuri Kimura |author2=Yukimitsu Tomida |author3=Daniela C. Kalthoff |author4=Isaac Casanovas-Vilar |author5=Thomas Mörs |year=2019 |title=A new endemic genus of eomyid rodents from the early Miocene of Japan |journal=Acta Palaeontologica Polonica |volume=64 |issue=2 |pages=303–312 |doi=10.4202/app.00558.2018 |doi-access=free }}</ref>
| Gen. et sp. nov
| Valid
| Kimura ''et al.''
| [[Earth:Early Miocene|Early Miocene]]
| Nakamura
| {{Flag|Japan}}
| A member of the family [[Biology:Eomyidae|Eomyidae]]. The type species is ''J. yasunoi''.
| 
|-
| ''Liodontia bathypotamos''<ref name=JVPAplodontiinae />
| Sp. nov
| Valid
| Hopkins
| Late [[Earth:Hemingfordian|Hemingfordian]]
| 
| {{Flag|United States}}<br />({{Flag|Montana}})
| A member of the family [[Biology:Aplodontiidae|Aplodontiidae]]
|
|-
| ''Liodontia dailyi''<ref name=JVPAplodontiinae />
| Sp. nov
| Valid
| Hopkins
| Late [[Earth:Hemingfordian|Hemingfordian]]
| 
| {{Flag|United States}}<br />({{Flag|Nevada}})
| A member of the family [[Biology:Aplodontiidae|Aplodontiidae]]
| 
|-
| ''Maquiamys''<ref name=Maquiamys />
| Gen. et comb. nov
| Valid
| Boivin ''in'' Boivin, Marivaux & Antoine
| Late Oligocene
| Chambira
| {{Flag|Peru}}
| A member of the superfamily Chinchilloidea. The type species is ''"Scleromys" praecursor'' Boivin
| 
|-
| ''Metanoiamys woodi''<ref name=ACM853>{{Cite journal|author=William W. Korth |year=2019 |title=Rodents (Mammalia) from the early Oligocene (Orellan) Cook Ranch local fauna of southwestern Montana |journal=Annals of Carnegie Museum |volume=85 |issue=3 |pages=223–248 |doi=10.2992/007.085.0303 }}</ref>
| Sp. nov
| Valid
| Korth
| [[Earth:Oligocene|Oligocene]] ([[Biology:Orellan|Orellan]])
| Sage Creek
| {{Flag|United States}}<br />({{Flag|Montana}})
| A member of the family [[Biology:Eomyidae|Eomyidae]]
| 
|-
| ''Mimomys nihewanensis''<ref name=VPZhengetal />
| Sp. nov
| Valid
| Zheng, Zhang & Cui
| Late Pliocene
| Nihewan
| {{Flag|China}}
| A member of [[Biology:Arvicolinae|Arvicolinae]]
| 
|-
| ''Monamys''<ref>{{Cite journal|author1=Hesham M. Sallam |author2=Erik R. Seiffert |year=2020 |title=Revision of Oligocene ''"Paraphiomys"'' and an origin for crown Thryonomyoidea (Rodentia: Hystricognathi: Phiomorpha) near the Oligocene–Miocene boundary in Africa |journal=Zoological Journal of the Linnean Society |volume=190 |issue=1 |pages=352–371 |doi=10.1093/zoolinnean/zlz148|url=https://academic.oup.com/zoolinnean/article/190/1/352/5691033 }}</ref>
| Gen. et comb. nov
| Valid
| Sallam & Seiffert
| [[Earth:Oligocene|Oligocene]] ([[Earth:Rupelian|Rupelian]])
| Jebel Qatrani
| {{Flag|Egypt}}
| A member of [[Biology:Phiomorpha|Phiomorpha]]. The type species is ''"Paraphiomys" simonsi'' Wood (1968).
| 
|-
| ''Natrona''<ref>{{cite journal |author=Mary R. Dawson |year=2019 |title=Paleontology and geology of the Badwater Creek Area, central Wyoming. Part 21. ''Natrona'', a new genus of rodent, family Sciuravidae (Mammalia) |journal=Annals of Carnegie Museum |volume=85 |issue=4 |pages=329–333 |doi=10.2992/007.085.0402 |s2cid=210839998 }}</ref>
| Gen. et sp. nov
| Valid
| Dawson
| [[Earth:Uintan|Uintan]] and [[Earth:Duchesnean|Duchesnean]]
| Wagon Bed
| {{Flag|United States}}<br />({{Flag|Wyoming}})
| A member of the family Sciuravidae. The type species is ''N. natronensis''.
| 
|-
| ''Paradjidaumo obritschorum''<ref>{{Cite journal|author1=William W. Korth |author2=Clint A. Boyd |author3=Jeff J. Person |year=2019 |title=Whitneyan (middle Oligocene) rodents from Obritsch Ranch (Stark County, North Dakota) and a review of Whitneyan rodent fossil record |journal=Annals of Carnegie Museum |volume=85 |issue=3 |pages=249–278 |doi=10.2992/007.085.0304 }}</ref>
| Sp. nov
| Valid
| Korth, Boyd & Person
| [[Earth:Oligocene|Oligocene]] ([[Biology:Whitneyan|Whitneyan]])
| Brule
| {{Flag|United States}}<br />({{Flag|North Dakota}})
| A member of the family [[Biology:Eomyidae|Eomyidae]]
| 
|-
| ''Paraethomys balearicus''<ref>{{Cite journal|author1=Enric Torres Roig |author2=Pedro Piñero |author3=Jordi Agustí |author4=Pere Bover |author5=Josep Antoni Alcover |year=2019 |title=First evidence of endemic Murinae (Rodentia, Mammalia) in the early Pliocene of the Balearic Islands (western Mediterranean) |journal=Geological Magazine |volume=156 |issue=10 |pages=1742–1750 |doi=10.1017/S0016756818000985 |bibcode=2019GeoM..156.1742T |s2cid=134837943 }}</ref>
| Sp. nov
| Valid
| Torres Roig ''et al.''
| Pliocene (Zanclean)
| 
| {{Flag|Spain}}
| A member of the family [[Biology:Muridae|Muridae]] belonging to the subfamily [[Biology:Murinae|Murinae]]
| 
|-
| ''Petaurista tetyukhensis''<ref>{{Cite journal|author1=Mikhail P. Tiunov |author2=Dmitryi O. Gimranov |year=2020 |title=The first fossil ''Petaurista'' (Mammalia: Sciuridae) from the Russian Far East and its paleogeographic significance |journal=Palaeoworld |volume=29 |issue=1 |pages=176–181 |doi=10.1016/j.palwor.2019.05.007 |hdl=10995/92658 |hdl-access=free }}</ref>
| Sp. nov
| In press
| Tiunov & Gimranov
| [[Earth:Late Pleistocene|Late Pleistocene]]
| 
| {{Flag|Russia}}
| A species of ''[[Biology:Petaurista|Petaurista]]''. Announced in 2019; the final version of the article naming it is scheduled to be published in 2020.
| 
|-
| ''Pitymys simplicidens''<ref name=VPZhengetal />
| Sp. nov
| Valid
| Zheng, Zhang & Cui
| [[Earth:Early Pleistocene|Early Pleistocene]]
| Nihewan
| {{Flag|China}}
| A species of ''[[Biology:Pitymys|Pitymys]]''
| 
|-
| ''Pliosiphneus daodiensis''<ref name=VPZhengetal />
| Sp. nov
| Valid
| Zheng, Zhang & Cui
| Late Pliocene
| Nihewan
| {{Flag|China}}
| A [[Biology:Zokor|zokor]]
| 
|-
| ''Pliosiphneus puluensis''<ref name=VPZhengetal />
| Sp. nov
| Valid
| Zheng, Zhang & Cui
| Late Pliocene
| Nihewan
| {{Flag|China}}
| A [[Biology:Zokor|zokor]]
| 
|-
| ''Proclinodontomys''<ref>{{Cite journal|author1=Adriana M. Candela |author2=Marcos Cenizo |author3=Daniel Tassara |author4=Luciano L. Rasia |author5=Céline Robinet |author6=Nahuel A. Muñoz |author7=Carola Cañón Valenzuela |author8=Ulyses F. J. Pardiñas |year=2019 |title=A new echimyid genus (Rodentia, Caviomorpha) in Central Argentina: uncovered diversity of a Brazilian group of mammals in the Pleistocene |journal=Journal of Paleontology |volume=94 |issue=1 |pages= 165–179|doi=10.1017/jpa.2019.73 |s2cid=204265515 }}</ref>
| Gen. et sp. et comb. nov
| Valid
| Candela ''et al.''
| [[Earth:Early Pleistocene|Early]]-[[Earth:Middle Pleistocene|Middle Pleistocene]] and early [[Earth:Holocene|Holocene]]
|
| {{Flag|Argentina}}<br />
{{Flag|Brazil}}<br />
{{Flag|Bolivia}}?
| A member of the family [[Biology:Echimyidae|Echimyidae]]. The type species is ''P. dondasi''; genus also includes ''"[[Biology:Mesomys|Mesomys]]" mordax'' Winge (1887).
| 
|-
| ''Progonomys manolo''<ref>{{Cite journal|author1=Raquel López Antoñanzas |author2=Sabrina Renaud |author3=Pablo Peláez Campomanes |author4=Dany Azar |author5=George Kachacha |author6=Fabien Knoll |year=2019 |title=First levantine fossil murines shed new light on the earliest intercontinental dispersal of mice |journal=Scientific Reports |volume=9 |issue=1 |pages=Article number 11874 |doi=10.1038/s41598-019-47894-y |pmid=31467294 |pmc=6715647 |bibcode=2019NatSR...911874L }}</ref>
| Sp. nov
| Valid
| López Antoñanzas ''et al.''
| Late Miocene
| 
| {{Flag|Lebanon}}
| A member of the family [[Biology:Muridae|Muridae]] belonging to the subfamily [[Biology:Murinae|Murinae]]
| 
|-
| ''Prosciurus hogansoni''<ref name=SCP103 />
| Sp. nov
| Valid
| Korth ''et al.''
| [[Earth:Oligocene|Oligocene]]
| Brule
| {{Flag|United States}}<br />({{Flag|North Dakota}})
| A member of the family [[Biology:Aplodontiidae|Aplodontiidae]] belonging to the subfamily Prosciurinae
| 
|-
| ''Prosigmodon tecolotum''<ref>{{cite journal |author1=Adolfo Pacheco Castro |author2=Oscar Carranza Castañeda |author3=Eduardo Jiménez Hidalgo |year=2019 |title=A new species of Sigmodontinae (Rodentia) from the late Hemphillian of central Mexico, and comments on the possible radiation of this group |journal=Revista Mexicana de Ciencias Geológicas |volume=36 |issue=3 |pages=321–333  |doi=10.22201/cgeo.20072902e.2019.3.1162 |doi-access=free }}</ref>
| Sp. nov
| Valid
| Pacheco Castro, Carranza Castañeda & Jiménez Hidalgo
| Early Pliocene (late [[Biology:Hemphillian|Hemphillian]])
| Tecolotlán<br />(San José)
| {{Flag|Mexico}}
| A member of [[Biology:Sigmodontinae|Sigmodontini]]
| 
|-
| ''Protorepomys''<ref name=Protorepomys>{{Cite journal|author1=Robert A. Martin |author2=Richard J. Zakrzewski |year=2019 |title=On the ancestry of woodrats |journal=Journal of Mammalogy |volume=100 |issue=5 |pages=1564–1582 |doi=10.1093/jmammal/gyz105 |s2cid=203900558 }}</ref>
| Gen. et 2 sp. nov
| Valid
| Martin & Zakrzewski
| [[Biology:Hemphillian|Hemphillian]]
| Shutler
| {{Flag|United States}}<br />({{Flag|Oregon}})
| A member of the family [[Biology:Cricetidae|Cricetidae]] belonging to the subfamily [[Biology:Neotominae|Neotominae]]. The type species is ''P. mckayensis''; genus also includes ''P. bartlettensis''.
| 
|-
| ''Pseudocricetodon heissigi''<ref name=PPPseudocricetodontinae />
| Sp. nov
| Valid
| Marković ''et al.''
| [[Earth:Oligocene|Oligocene]]
| 
| {{Flag|Serbia}}
| A member of the family [[Biology:Muridae|Muridae]] belonging to the subfamily Pseudocricetodontinae
|
|-
| ''Saremmys''<ref>{{Cite journal|author1=Felipe Busker |author2=María E. Pérez |author3=María T. Dozo |year=2019 |title=A new chinchilloid (Rodentia, Hystricognathi) from the early Miocene of the localities of Bryn Gwyn and Gran Barranca (Patagonia, Argentina) |journal=Comptes Rendus Palevol |volume=18 |issue=5 |pages=525–540 |doi=10.1016/j.crpv.2019.05.003 |doi-access=free }}</ref>
| Gen. et sp. nov
| Valid
| Busker, Pérez & Dozo
| Miocene ([[Earth:Colhuehuapian|Colhuehuapian]])
|
| {{Flag|Argentina}}
| A member of Chinchilloidea of uncertain phylogenetic placement. Genus includes new species ''S. ligcura''.
| 
|-
| ''Spermophilinus kumkolensis''<ref>{{Cite journal|author1=Qiang Li |author2=Xinying Zhou |author3=Xijun Ni |author4=Bihong Fu |author5=Tao Deng |year=2019 |title=Latest Middle Miocene fauna and flora from Kumkol Basin of northern Qinghai-Xizang Plateau and paleoenvironment |journal=Science China Earth Sciences |volume=63 |issue=2 |pages=188–201 |doi=10.1007/s11430-019-9521-8 |s2cid=207990767 }}</ref>
| Sp. nov
| Valid
| Li ''et al.''
| [[Earth:Middle Miocene|Middle Miocene]]
| Shimagou
| {{Flag|China}}
| A member of the family Sciuridae belonging to the subfamily [[Biology:Sciurinae|Sciurinae]]. Announced in 2019; the final version of the article naming it was published in 2020.
|
|-
| ''Spermophilus praecox''<ref>{{Cite journal|author1=Maxim V. Sinitsa |author2=Nataliya V. Pogodina |year=2019 |title=The evolution of early ''Spermophilus'' in eastern Europe and the antiquity of the Old World ground squirrels |journal=Acta Palaeontologica Polonica |volume=64 |issue=3 |pages=643–667 |doi=10.4202/app.00605.2019 |doi-access=free }}</ref>
| Sp. nov
| Valid
| Sinitsa & Pogodina
| Late Pliocene and [[Earth:Early Pleistocene|Early Pleistocene]]
| 
| {{Flag|Ukraine}}
| A species of ''[[Biology:Spermophilus|Spermophilus]]''
|
|-
| ''Tsaphanomys''<ref name=Protorepomys />
| Gen. et comb. nov
| Valid
| Martin & Zakrzewski
| [[Biology:Hemphillian|Hemphillian]]
| Grassy Mountain
| {{Flag|United States}}<br />({{Flag|Oregon}})
| A member of the family [[Biology:Cricetidae|Cricetidae]] belonging to the subfamily [[Biology:Neotominae|Neotominae]]. The type species is ''"[[Biology:Paronychomys|Paronychomys]]" shotwelli'' Korth (2011).
| 
|-
| ''Typhlomys storchi''<ref>{{cite journal |author1=Zhuding Qiu |author2=Xijun Ni |year=2019 |title=Platacanthomyids (Rodentia, Mammalia) from the late Miocene Yuanmou hominoid locality of Yunnan, China |journal=Fossil Imprint |volume=75 |issue=3–4 |pages=383–396 |doi=10.2478/if-2019-0024 |s2cid=210921503 |doi-access=free }}</ref>
| Sp. nov
| Valid
| Qiu & Ni
| Late Miocene
| Xiaohe
| {{Flag|China}}
| A relative of the Chinese pygmy dormouse
| 
|-
| ''Wilsoneumys focarius''<ref name=ACM853 />
| Sp. nov
| Valid
| Korth
| [[Earth:Oligocene|Oligocene]] ([[Biology:Orellan|Orellan]])
| Sage Creek
| {{Flag|United States}}<br />({{Flag|Montana}})
| A member of the family [[Biology:Cricetidae|Cricetidae]]
| 
|-
|}

===Primates===

===Other eutherians===
* A study on the phylogenetic relationships of extant and fossil moles belonging to the tribe [[Biology:Scalopini|Scalopini]] is published by Schwermann ''et al.'' (2019).<ref>{{Cite journal|author1=Achim H. Schwermann |author2=Kai He |author3=Benjamin J. Peters |author4=Thorsten Plogschties |author5=Gabriele Sansalone |year=2019 |title=Systematics and macroevolution of extant and fossil scalopine moles (Mammalia, Talpidae) |journal=Palaeontology |volume=62 |issue=4 |pages=661–676 |doi=10.1111/pala.12422 }}</ref>
* A study on early Miocene fossils of members of the families Soricidae and Heterosoricidae from the Ribesalbes-Alcora Basin ({{wipe|Spain}}) is published by Crespo ''et al.'' (2019).<ref>{{cite journal |author1=Vicente D. Crespo |author2=Ana Fagoaga |author3=Plini Montoya |author4=Francisco J. Ruiz-Sánchez |year=2019 |title=Old-timers and newcomers: The shrews and heterosoricids from the Ribesalbes-Alcora Basin (East of Spain) |journal=Palaeontologia Electronica |volume=22 |issue=3 |pages=Article number 22.3.64 |doi=10.26879/999 |doi-access=free }}</ref>
* A study on the anatomy of [[Biology:Tarsus (skeleton)|tarsals]] of ''[[Biology:Batodonoides|Batodonoides]] powayensis'', and on its implications for the knowledge of the phylogenetic relationships of the family Geolabididae, is published by Zack & Penkrot (2019).<ref>{{Cite journal|author1=Shawn P. Zack |author2=Tonya A. Penkrot |year=2019 |title=Tarsals of the miniscule insectivorous mammal ''Batodonoides'' from the Eocene of San Diego County, California |journal=Journal of Vertebrate Paleontology |volume=39 |issue=4 |pages=e1672076 |doi=10.1080/02724634.2019.1672076 |s2cid=209439991 }}</ref>
* Description of the brain, inner ear, sinuses and endocranial nerves and vessels of the [[Biology:Periptychidae|periptychid]] ''Carsioptychus coarctatus'' is published by Cameron ''et al.'' (2019).<ref>{{cite journal |author1=Joe Cameron |author2=Sarah L. Shelley |author3=Thomas E. Williamson |author4=Stephen L. Brusatte |year=2019 |title=The brain and inner ear of the early Paleocene 'condylarth' ''Carsioptychus coarctatus'': Implications for early placental mammal neurosensory biology and behavior |journal=The Anatomical Record |volume=302 |issue=2 |pages=306–324 |doi=10.1002/ar.23903 |pmid=30290063 |hdl=20.500.11820/e5581cdd-31bc-42c9-bde2-d2597c424998 |s2cid=52925480 |doi-access=free }}</ref>
* Virtual [[Biology:Endocast|endocast]]s of endocranium and inner ear of ''Chriacus pelvidens'' and ''Chriacus baldwini'' are reconstructed by Bertrand ''et al.'' (2019).<ref>{{cite journal |author1=Ornella C. Bertrand |author2=Sarah L. Shelley |author3=John R. Wible |author4=Thomas E. Williamson |author5=Luke T. Holbrook |author6=Stephen G.B. Chester |author7=Ian B. Butler |author8=Stephen L. Brusatte |year=2019 |title=Virtual endocranial and inner ear endocasts of the Paleocene "condylarth" ''Chriacus'': new insight into the neurosensory system and evolution of early placental mammals |journal=Journal of Anatomy |volume=236 |issue=1 |pages=21–49 |doi=10.1111/joa.13084 |pmid=31667836 |pmc=6904649 |pmc-embargo-date=January 1, 2022 }}</ref>
* Description of new fossil material of ''[[Biology:Molinodus|Molinodus]] suarezi'', ''Simoclaenus sylvaticus'', ''Tiuclaenus minutus'', ''Tiuclaenus robustus'' and ''Pucanodus gagnieri'' from the [[Earth:Paleocene|Paleocene]] of the Tiupampa locality (Bolivia), providing new information on the anatomy of skulls and teeth of these taxa, is published by de Muizon, Billet & Ladevèze (2019).<ref>{{cite journal |author1=Christian de Muizon |author2=Guillaume Billet |author3=Sandrine Ladevèze |year=2019 |title=New remains of kollpaniine "condylarths" (Panameriungulata) from the early Palaeocene of Bolivia shed light on hypocone origins and molar proportions among ungulate-like placentals |journal=Geodiversitas |volume=41 |issue=25 |pages=841–874 |doi=10.5252/geodiversitas2019v41a25 |s2cid=213555736 |url=http://sciencepress.mnhn.fr/en/periodiques/geodiversitas/41/25 |doi-access=free }}</ref>
* New [[Biology:Astrapotheria|astrapothere]] fossils from the [[Earth:Eocene|Eocene]] Cañadón Vaca Member of the Sarmiento Formation ({{wipe|Argentina}}), providing new information the early diversification of this group, are described by Kramarz, Bond & Carlini (2019).<ref>{{cite journal |author1=Alejandro G. Kramarz |author2=Mariano Bond |author3=Alfredo A. Carlini |year=2019 |title=Astrapotheres from Cañadón Vaca, middle Eocene of central Patagonia. New insights on diversity, anatomy and early evolution of Astrapotheria |journal=Palaeontologia Electronica |volume=22 |issue=2 |pages=Article number 22.2.52 |doi=10.26879/986 |doi-access=free }}</ref>
* Redescription of ''Protolipterna ellipsodontoides'' and a study on the teeth variation between members of this species is published by Zanesco, Bergqvist & Pereira (2019).<ref>{{cite journal |author1=Tábata Zanesco |author2=Lílian P. Bergqvist |author3=Ágatha Agnes Pereira |year=2019 |title=Intraspecific variation of one of the oldest Litopterna (Mammalia), ''Protolipterna ellipsodontoides'', and redescription of the species |journal=Ameghiniana |volume=56 |issue=5 |pages=380–401 |doi=10.5710/AMGH.11.08.2019.3250 |s2cid=202196250 }}</ref>
* Description of [[Biology:Litopterna|litopterns]] from the early Miocene Pampa Castillo fauna (Galera Formation, {{wipe|Chile}}) and a study on the phylogenetic relationships of [[Biology:Proterotheriidae|proterotheriids]] is published online by McGrath, Flynn & Wyss (2019).<ref>{{cite journal |author1=Andrew J. McGrath |author2=John J. Flynn |author3=André R. Wyss |year=2019 |title=Proterotheriids and macraucheniids (Litopterna: Mammalia) from the Pampa Castillo Fauna, Chile (early Miocene, Santacrucian SALMA) and a new phylogeny of Proterotheriidae |journal=Journal of Systematic Palaeontology |volume=18 |issue=9 |pages=717–738 |doi=10.1080/14772019.2019.1662500 |s2cid=204142828 }}</ref>
* Description of new cranial remains of the [[Biology:Proterotheriidae|proterotheriid]] ''[[Biology:Neolicaphrium|Neolicaphrium]] recens'' from the [[Earth:Pleistocene|Pleistocene]] [[Earth:Sopas Formation|Sopas Formation]] (Uruguay), and a study on the diet of this species as indicated by tooth microwear, is published by Corona, Ubilla & Perea (2019).<ref>{{cite journal |author1=Andrea Corona |author2=Martín Ubilla |author3=Daniel Perea |year=2019 |title=New records and diet reconstruction using dental microwear analysis for ''Neolicaphrium recens'' Frenguelli, 1921 (Litopterna, Proterotheriidae) |journal=Andean Geology |volume=46 |issue=1 |pages=153–167 |doi=10.5027/andgeoV46n1-3136  |doi-access=free }}</ref>
* A study on the dietary and environmental preferences of ''Neolicaphrium recens'' is published by Morosi & Ubilla (2019).<ref>{{Cite journal|author1=Elizabeth Morosi |author2=Martin Ubilla |year=2019 |title=Dietary and palaeoenvironmental inferences in ''Neolicaphrium recens'' Frenguelli, 1921 (Litopterna, Proterotheriidae) using carbon and oxygen stable isotopes (Late Pleistocene; Uruguay) |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=2 |pages=196–202 |doi=10.1080/08912963.2017.1355914 |s2cid=133673644 }}</ref>
* New proterotheriid and [[Biology:Macraucheniidae|macraucheniid]] fossil material is described from the late [[Earth:Oligocene|Oligocene]] Quebrada Fiera locality (Mendoza Province, {{wipe|Argentina}}) by Schmidt, Cerdeño & Del Pino (2019), extending the geographical range of ''Coniopternium'', and including the first Argentinian record of ''[[Biology:Lambdaconus|Lambdaconus]]'' outside [[Place:Patagonia|Patagonia]].<ref>{{Cite journal|author1=Gabriela Ines Schmidt |author2=Esperanza Cerdeño |author3=Santiago Hernández Del Pino |year=2019 |title=Macraucheniidae and Proterotheriidae (Mammalia, Litopterna) from Quebrada Fiera (Late Oligocene), Mendoza Province, Argentina |journal=Andean Geology |volume=46 |issue=2 |pages=368–382 |doi=10.5027/andgeoV46n2-3109 |doi-access=free }}</ref>
* Left dentary of a member of the genus ''Harpagolestes'' belonging or related to the species ''H. uintensis'' is described from the [[Earth:Eocene|Eocene]] Clarno Formation (Oregon, {{wipe|United States}}) by Robson ''et al.'' (2019), representing the first [[Biology:Mesonychidae|mesonychid]] from this formation reported so far.<ref>{{cite journal |author1=Selina V. Robson |author2=Nicholas A. Famoso |author3=Edward Byrd Davis |author4=Samantha S.B. Hopkins |year=2019 |title=First mesonychid from the Clarno Formation (Eocene) of Oregon, USA |journal=Palaeontologia Electronica |volume=22 |issue=2 |pages=Article number 22.2.35 |doi=10.26879/856 |doi-access=free }}</ref>
* A study on the phylogenetic relationships of [[Biology:Desmostylia|desmostylia]]ns is published by Matsui & Tsuihiji (2019).<ref>{{Cite journal|author1=Kumiko Matsui |author2=Takanobu Tsuihiji |year=2019 |title=The phylogeny of desmostylians revisited: proposal of new clades based on robust phylogenetic hypotheses |journal=PeerJ |volume=7 |pages=e7430 |doi=10.7717/peerj.7430 |pmid=31637114 |pmc=6800978 }}</ref>
* New fossil material of ''Pantolestes'' is described from the [[Earth:Uinta Basin|Uinta Basin]] (Utah, United States) by Dunn & Townsend (2019), who also revise species-level diversity of ''Pantolestes'' from the [[Earth:Bridgerian North American Stage|Bridgerian]] and [[Earth:Uintan|Uintan]] [[Earth:North American land mammal age|North American land mammal age]]s.<ref>{{Cite journal|author1=Rachel H. Dunn |author2=K. E. Beth Townsend |year=2019 |title=New pantolestids from the Uinta Formation, Utah |journal=Journal of Vertebrate Paleontology |volume=39 |issue=4 |pages=e1652622 |doi=10.1080/02724634.2019.1652622 |s2cid=208602464 }}</ref>
* A study comparing the teeth of ''Prionogale'' to the teeth of subadult hyaenodonts and carnivorans, as well as evaluating the phylogenetic affinities of ''Prionogale'' and ''Namasector'' within Hyaenodonta, is published by Borths & Stevens (2019), who reinterpret the type specimen of ''Prionogale breviceps'' and some of the paratype materials as preserving deciduous teeth which were previously interpreted as permanent dentition.<ref>{{Cite journal|author1=Matthew R. Borths |author2=Nancy J. Stevens |year=2019 |title=Taxonomic affinities of the enigmatic ''Prionogale breviceps'', early Miocene, Kenya |journal=Historical Biology: An International Journal of Paleobiology |volume=31 |issue=6 |pages=784–793 |doi=10.1080/08912963.2017.1393075 |s2cid=91104783 }}</ref>
* A reconstruction of the [[Biology:Endocast|endocast]] of ''Proviverra typica'' based on X‐ray microtomography is presented by Dubied, Solé & Mennecart (2019), who also study the phylogenetic relationships of hyaenodonts.<ref>{{Cite journal|author1=Morgane Dubied |author2=Floréal Solé |author3=Bastien Mennecart |year=2019 |title=The cranium of ''Provierra typica'' (Mammalia, Hyaenodonta) and its impact on hyaenodont phylogeny and endocranial evolution |journal=Palaeontology |volume=62 |issue=6 |pages=983–1001 |doi=10.1111/pala.12437 }}</ref>
* Description of a partial skeleton of a medium-sized carnivorous mammal (classified as a [[Biology:Machaeroidinae|machaeroidine]] [[Biology:Oxyaenidae|oxyaenid]]) from the [[Earth:Uinta Formation|Uinta Formation]] (Utah, {{wipe|United States}}) and a study on machaeroidine locomotor habits and on phylogenetic affinities of machaeroidines and "[[Biology:Creodonta|creodonts]]" in general is published by Zack (2019).<ref>{{Cite journal|author=Shawn P. Zack |year=2019 |title=A skeleton of a Uintan machaeroidine 'creodont' and the phylogeny of carnivorous eutherian mammals |journal=Journal of Systematic Palaeontology |volume=17 |issue=8 |pages=653–689 |doi=10.1080/14772019.2018.1466374 |s2cid=89934728 }}</ref>
* Description of rabbit fossils from the Late Miocene Shuitangba site (Zhaotong Basin; Yunnan, {{wipe|China}}), assigned to the extant genus ''[[Biology:Nesolagus|Nesolagus]]'', and a study on their implications for the knowledge of the evolutionary history of this genus and paleoecology of the site, is published by Flynn ''et al.'' (2019).<ref>{{cite journal |author1=Lawrence J. Flynn |author2=Chang-Zhu Jin |author3=Jay Kelley |author4=Nina G. Jablonski |author5=Xue-Ping Ji |author6=Denise F. Su |author7=Tao Deng |author8=Qiang Li |year=2019 |title=Late Miocene fossil calibration from Yunnan Province for the striped rabbit ''Nesolagus'' |journal=Vertebrata PalAsiatica |volume=57 |issue=3 |pages=214–224 |doi=10.19615/j.cnki.1000-3118.190326 }}</ref>
* A study on the size of fossil rabbits from 14 late Pleistocene and Holocene archaeological sites in Portugal, and on its implications for the knowledge of temperatures and environment in the area of Portugal during the last glaciation, is published by Davis (2019).<ref>{{cite journal |author=Simon J. M. Davis |year=2019 |title=Rabbits and Bergmann's rule: how cold was Portugal during the last glaciation? |journal=Biological Journal of the Linnean Society |volume=128 |issue=3 |pages=526–549 |doi=10.1093/biolinnean/blz098 }}</ref>
* Description of the anatomy of a partial skeleton and a dentary with anterior teeth of the [[Biology:Plesiadapiformes|plesiadapiform]] ''[[Biology:Torrejonia|Torrejonia]] wilsoni'' from the lower [[Earth:Paleocene|Paleocene]] Nacimiento Formation (New Mexico, {{wipe|United States}}) is published by Chester ''et al.'' (2019).<ref>{{cite journal |author1=Stephen G.B. Chester |author2=Thomas E. Williamson |author3=Mary T. Silcox |author4=Jonathan I. Bloch |author5=Eric J. Sargis |year=2019 |title=Skeletal morphology of the early Paleocene plesiadapiform ''Torrejonia wilsoni'' (Euarchonta, Palaechthonidae) |journal=Journal of Human Evolution |volume=128 |pages=76–92 |doi=10.1016/j.jhevol.2018.12.004 |pmid=30825983 }}</ref>
* A study on the anatomy, life history and phylogenetic relationships of ''[[Biology:Plesiadapis|Plesiadapis]] cookei'' is published by Boyer & [[Biography:Philip D. Gingerich|Gingerich]] (2019).<ref>{{Cite journal|author1=Douglas M. Boyer |author2=Philip D. Gingerich  |year=2019 |title=Skeleton of Late Paleocene ''Plesiadapis cookei'' (Mammalia, Euarchonta): life history, locomotion, and phylogenetic relationships |journal=University of Michigan Papers on Paleontology |volume=38 |pages=1–269 |hdl=2027.42/151767 }}</ref>

{| class="wikitable sortable" align="center" width="100%"
|-
! Name !! Novelty !! Status !! Authors !! Age !! Type locality !! Country !! Notes !! Images
|-
| ''[[Biology:Astrapotherium|Astrapotherium guillei]]''<ref>{{cite journal |author1=Alejandro Gustavo Kramarz |author2=Alberto Garrido |author3=Mariano Bond |year=2019 |title=''Astrapotherium'' from the Middle Miocene Collón Cura Formation and the decline of astrapotheres in southern South America |journal=Ameghiniana |volume=56 |issue=4 |pages=290–306 |doi=10.5710/AMGH.15.07.2019.3258 }}</ref>
| Sp. nov
| Valid
| Kramarz, Garrido & Bond
| [[Earth:Middle Miocene|Middle Miocene]]
| [[Earth:Collón Curá Formation|Collón Curá]]
| {{Flag|Argentina}}
| A new species of ''[[Biology:Astrapotherium|Astrapotherium]]''
| 
|-
| ''Cartierodon''<ref>{{cite journal |author1=Floréal Solé |author2=Bastien Mennecart |year=2019 |title=A large hyaenodont from the Lutetian of Switzerland expands the body mass range of the European mammalian predators during the Eocene |journal=Acta Palaeontologica Polonica |volume=64 |issue=2 |pages=275–290 |doi=10.4202/app.00581.2018 |doi-access=free }}</ref>
| Gen. et sp. nov
| Valid
| Solé & Mennecart
| [[Earth:Eocene|Eocene]] ([[Earth:Lutetian|Lutetian]])
| 
| {{Flag|France}}<br />{{Flag|Switzerland}}
| A member of Hyaenodonta belonging to the family [[Biology:Hyaenodontidae|Hyaenodontidae]]. The type species is ''C. egerkingensis''.
| APP
|-
| ''Enantiostylops''<ref>{{Cite journal|author=Alexander O. Averianov |year=2019 |title=Reappraisal of arctostylopid mammal ''Kazachostylops occidentalis'' from the late Paleocene of Kazakhstan and phylogenetic relationships within Arctostylopida |journal=Journal of Paleontology |volume=94 |issue=3 |pages=568–579 |doi=10.1017/jpa.2019.93 |s2cid=212827856 }}</ref>
| Gen. et comb. nov
| Valid
| Averianov
| Early Eocene
| 
| {{Flag|China}}
| A member of [[Biology:Arctostylopida|Arctostylopida]]; a new genus for ''"Sinostylops" progressus'' Tang & Yan (1976)
| 
|-
| ''Fratrodon''<ref name=Fratrodon>{{Cite journal|author1=Floréal Solé |author2=Olivia Plateau |author3=Kévin Le Verger |author4=Alain Phélizon |year=2019 |title=New paroxyclaenid mammals from the early Eocene of the Paris Basin (France) shed light on the origin and evolution of these endemic European cimolestans |journal=Journal of Systematic Palaeontology |volume=17 |issue=20 |pages=1711–1743 |doi=10.1080/14772019.2018.1551248 |s2cid=92487920 |url=http://doc.rero.ch/record/327423/files/pla_npm.pdf }}</ref>
| Gen. et sp. nov
| Valid
| Solé ''et al.''
| [[Earth:Eocene|Eocene]] ([[Earth:Ypresian|Ypresian]])
| Paris
| {{Flag|France}}
| A member of the family Paroxyclaenidae. Genus includes new species ''F. tresvauxi''.
|
|-
| ''[[Biology:Hyaenodon|Hyaenodon pumilus]]''<ref>{{Cite journal|author=A. V. Lavrov |year=2019 |title=New material on small hyenodons (Hyaenodontinae, Creodonta) from the Paleogene of Mongolia |journal=Paleontological Journal |volume=53 |issue=4 |pages=418–431 |doi=10.1134/S0031030119040063 |s2cid=201654889 |url=https://elibrary.ru/item.asp?id=38502636 }}</ref>
| Sp. nov
| Valid
| Lavrov
| Late Eocene
| 
| {{Flag|Mongolia}}
| 
| 
|-
| ''Lophocion grangeri''<ref>{{Cite journal|author1=Bin Bai |author2=Yuan-Qing Wang |author3=Jin Meng |year=2019 |title=A new late Paleocene phenacodontid 'condylarth' ''Lophocion'' from the Clark's Fork Basin of Wyoming |journal=Historical Biology: An International Journal of Paleobiology |volume=33 |issue=5 |pages=652–659 |doi=10.1080/08912963.2019.1652283 |s2cid=202017719 }}</ref>
| Sp. nov
| Valid
| Bai, Wang & Meng
| Late Paleocene
| Clark's Fork
| {{Flag|United States}}<br />({{Flag|Wyoming}})
| A member of the family [[Biology:Phenacodontidae|Phenacodontidae]]. Announced in 2019; the final version of the article naming it was published in 2021.
| 
|-
| ''[[Biology:Merialus|Merialus bruneti]]''<ref name=Fratrodon />
| Sp. nov
| Valid
| Solé ''et al.''
| [[Earth:Eocene|Eocene]] ([[Earth:Ypresian|Ypresian]])
| Paris
| {{Flag|France}}
| A member of the family Paroxyclaenidae
| 
|-
| ''[[Biology:Nesophontes hemicingulus|Nesophontes hemicingulus]]''<ref name=BAMNH428 />
| Sp. nov
| Valid
| Morgan ''et al.''
| [[Earth:Late Pleistocene|Late Pleistocene]]-[[Earth:Holocene|Holocene]]
| 
| {{Flag|Cayman Islands}}
| A species of ''[[Biology:Nesophontes|Nesophontes]]''
| 
|-
| ''Oligoechinus''<ref>{{Cite journal|author1=Zhichao Li |author2=Yongxiang Li |author3=Xiangxu Xue |author4=Wenhou Li |author5=Yunxiang Zhang |author6=Fu Yang |year=2019 |title=A new fossil Erinaceidae from the Shajingyi area in the Lanzhou Basin, China |journal=Acta Geologica Sinica (English Edition) |volume=93 |issue=4 |pages=789–798 |doi=10.1111/1755-6724.13797 |url=http://www.geojournals.cn/dzxben/ch/reader/view_abstract.aspx?file_no=2019endzxb04001&flag=1 }}</ref>
| Gen. et sp. nov
| Valid
| Li ''et al.''
| Late Oligocene
| Lanzhou Basin
| {{Flag|China}}
| A member of the family [[Biology:Erinaceidae|Erinaceidae]]. Genus includes new species ''O. lanzhouensis''.
|
|-
| ''Pahelia''<ref>{{Cite journal|author1=Shawn P. Zack |author2=Kenneth D. Rose |author3=Luke T. Holbrook |author4=Kishor Kumar |author5=Rajendra S. Rana |author6=Thierry Smith |year=2019 |title=An enigmatic new ungulate‐like mammal from the early Eocene of India |journal=Papers in Palaeontology |volume=7 |issue=1 |pages=497–520 |doi=10.1002/spp2.1288 |doi-access=free }}</ref>
| Gen. et sp. nov
| Valid
| Zack ''et al.''
| Early Eocene
| Cambay
| {{Flag|India}}
| An ungulate‐like herbivorous mammal. Genus includes new species ''P. mysteriosa''.
|
|-
| ''Paraspaniella''<ref name=Fratrodon />
| Gen. et sp. nov
| Valid
| Solé ''et al.''
| [[Earth:Eocene|Eocene]] ([[Earth:Ypresian|Ypresian]])
| Paris
| {{Flag|France}}
| A member of the family Paroxyclaenidae. Genus includes new species ''P. gunnelli''.
| 
|-
| ''Propterodon witteri''<ref>{{cite journal |author=Shawn P. Zack |year=2019 |title=The first North American ''Propterodon'' (Hyaenodonta: Hyaenodontidae), a new species from the late Uintan of Utah |journal=PeerJ |volume=7 |pages=e8136 |doi=10.7717/peerj.8136 |pmid=31772846 |pmc=6876642 }}</ref>
| Sp. nov
| Valid
| Zack
| late [[Earth:Uintan|Uintan]]
| [[Earth:Uinta Formation|Uinta Formation]]
| {{Flag|United States}}<br />({{Flag|Utah}})
| A member of the family [[Biology:Hyaenodontidae|Hyaenodontidae]]
|
|-
| ''Saltaodus''<ref>{{cite journal |author1=Javier N. Gelfo |author2=Ricardo N. Alonso |author3=Richard H. Madden |author4=Alfredo A. Carlini |year=2019 |title=An Eocene bunodont South American native ungulate (Didolodontidae) from the Lumbrera Formation, Salta Province, Argentina |journal=Ameghiniana |volume=57 |issue=2 |pages=132–145 |doi=10.5710/AMGH.29.11.2019.3293 |s2cid=212862646 }}</ref>
| Gen. et sp. nov
| Valid
| Gelfo ''et al.''
| [[Earth:Eocene|Eocene]]
| Lumbrera
| {{Flag|Argentina}}
| A native South American ungulate belonging to the family [[Biology:Didolodontidae|Didolodontidae]]. Genus includes new species ''S. sirolli''. Announced in 2019; the final version of the article naming it was published in 2020.
| 
|-
| ''Simbakubwa''<ref>{{cite journal |author1=Matthew R. Borths |author2=Nancy J. Stevens |year=2019 |title=''Simbakubwa kutokaafrika'', gen. et sp. nov. (Hyainailourinae, Hyaenodonta, 'Creodonta,' Mammalia), a gigantic carnivore from the earliest Miocene of Kenya |journal=Journal of Vertebrate Paleontology |volume=39 |issue=1 |pages=e1570222 |doi=10.1080/02724634.2019.1570222 |s2cid=145972918 }}</ref>
| Gen. et sp. nov
| Valid
| Borths & Stevens
| [[Earth:Early Miocene|Early Miocene]]
| 
| {{Flag|Kenya}}
| A member of Hyaenodonta belonging to the group Hyainailouroidea and to the subfamily Hyainailourinae. The type species is ''S. kutokaafrika''.
| 
|-
| ''Sororodon''<ref name=Fratrodon />
| Gen. et sp. nov
| Valid
| Solé ''et al.''
| [[Earth:Eocene|Eocene]] ([[Earth:Ypresian|Ypresian]])
| Paris
| {{Flag|France}}
| A member of the family Paroxyclaenidae. Genus includes new species ''S. tresvauxae''.
| 
|-
| ''[[Biology:Uruguayodon|Uruguayodon]]''<ref>{{cite journal |author1=Andrea Corona |author2=Daniel Perea |author3=Martín Ubilla |year=2019 |title=A new genus of Proterotheriinae (Mammalia, Litopterna) from the Pleistocene of Uruguay |journal=Journal of Vertebrate Paleontology |volume=39 |issue=1 |pages=e-1567523 |doi=10.1080/02724634.2019.1567523 |s2cid=145907219 }}</ref>
| Gen. et sp. nov
| Valid
| Corona, Perea & Ubilla
| [[Earth:Pleistocene|Pleistocene]]
| 
| {{Flag|Uruguay}}
| A member of [[Biology:Litopterna|Litopterna]] belonging to the subfamily [[Biology:Proterotheriinae|Proterotheriinae]]. Genus includes new species ''U. alius''.
|
|-
|}

==Other mammals==
* A study on [[Medicine:Occlusion (dentistry)|occlusion]] and function of teeth in ''[[Biology:Morganucodon|Morganucodon]] watsoni'' and ''[[Biology:Megazostrodon|Megazostrodon]] rudnerae'' is published by Jäger ''et al.'' (2019).<ref>{{Cite journal|author1=Kai R. K. Jäger |author2=Pam G. Gill |author3=Ian Corfe |author4=Thomas Martin |year=2019 |title=Occlusion and dental function of ''Morganucodon'' and ''Megazostrodon'' |journal=Journal of Vertebrate Paleontology |volume=39 |issue=3 |pages=e1635135 |doi=10.1080/02724634.2019.1635135 |s2cid=203408846 }}</ref>
* A study on teeth development and replacement in [[Earth:Jurassic|Jurassic]] [[Biology:Euharamiyida|euharamiyida]]n mammals from the Yanliao Biota ({{wipe|China}}) is published by Mao ''et al.'' (2019).<ref>{{cite journal |author1=Fang-Yuan Mao |author2=Xiao-Ting Zheng |author3=Xiao-Li Wang |author4=Yuan-Qing Wang |author5=Shun-Dong Bi |author6=Jin Meng |year=2019 |title=Evidence of diphyodonty and heterochrony for dental development in euharamiyidan mammals from Jurassic Yanliao Biota |journal=Vertebrata PalAsiatica |volume=57 |issue=1 |pages=51–76 |doi=10.19615/j.cnki.1000-3118.180803 }}</ref>
* A study on the anatomy of the auditory and [[Biology:Hyoid bone|hyoid bone]]s of ''[[Biology:Arboroharamiya|Arboroharamiya]] allinhopsoni'' and ''Arboroharamiya jenkinsi'' is published online by Meng ''et al.'' (2019).<ref>{{cite journal |author1=Jin Meng |author2=Fangyuan Mao |author3=Gang Han |author4=Xiao‐Ting Zheng |author5=Xiao‐Li Wang |author6=Yuanqing Wang |year=2019 |title=A comparative study on auditory and hyoid bones of Jurassic euharamiyidans and contrasting evidence for mammalian middle ear evolution |journal=Journal of Anatomy |volume=236 |issue=1 |pages=50–71 |doi=10.1111/joa.13083 |pmid=31498899 |pmc=6904648 |pmc-embargo-date=January 1, 2022 }}</ref>
* A study on the [[Medicine:Tooth wear|tooth wear]] in ''Qishou'' and ''[[Biology:Shenshou|Shenshou]]'' from the Yanliao Biota, and on the [[Medicine:Occlusion (dentistry)|occlusal]] modes present in "[[Biology:Haramiyida|haramiyida]]n" taxa, is published by Mao & Meng (2019).<ref>{{Cite journal|author1=Fangyuan Mao |author2=Jin Meng |year=2019 |title=Tooth microwear and occlusal modes of euharamiyidans from the Jurassic Yanliao Biota reveal mosaic tooth evolution in Mesozoic allotherian mammals |journal=Palaeontology |volume=62 |issue=4 |pages=639–660 |doi=10.1111/pala.12421 }}</ref>
* A study on the anatomy of the petrosal of ''[[Biology:Borealestes|Borealestes]]'' is published by Panciroli, Schultz & Luo (2019), who also generate an endocast of the inner ear of ''Borealestes''.<ref>{{Cite journal|author1=Elsa Panciroli |author2=Julia A. Schultz |author3=Zhe‐Xi Luo |year=2019 |title=Morphology of the petrosal and stapes of ''Borealestes'' (Mammaliaformes, Docodonta) from the Middle Jurassic of Skye, Scotland |journal=Papers in Palaeontology |volume=5 |issue=1 |pages=139–156 |doi=10.1002/spp2.1233 |doi-access=free }}</ref>
* A study on the anatomy of the mandible and teeth of ''Borealestes serendipitus'' and on the phylogenetic relationships of this species, based on data from new specimens from the Isle of Skye (Scotland), is published by Panciroli, Benson & Luo (2019).<ref>{{Cite journal|author1=Elsa Panciroli |author2=Roger B. J. Benson |author3=Zhe-Xi Luo |year=2019 |title=The mandible and dentition of ''Borealestes serendipitus'' (Docodonta) from the Middle Jurassic of Skye, Scotland |journal=Journal of Vertebrate Paleontology |volume=39 |issue=3 |pages=e1621884 |doi=10.1080/02724634.2019.1621884 |s2cid=199637122 |url=https://www.pure.ed.ac.uk/ws/files/92037088/92037008._Panciroli._AAM.pdf }}</ref>
* A revision of the teeth and mandibular fossils of members of the genus ''[[Biology:Docodon|Docodon]]'' from Yale Quarry 9 at the [[Earth:Como Bluff|Como Bluff]] site in the Upper Jurassic [[Earth:Morrison Formation|Morrison Formation]] is published by Schultz, Bhullar & Luo (2019), who argue that the fossils from that quarry represent only one species, ''Docodon victor''.<ref>{{cite journal |author1=Julia A. Schultz |author2=Bhart-Anjan S. Bhullar |author3=Zhe-Xi Luo |year=2019 |title=Re-examination of the Jurassic mammaliaform ''Docodon victor'' by computed tomography and occlusal functional analysis |journal=Journal of Mammalian Evolution |volume=26 |issue=1 |pages= 9–38|doi=10.1007/s10914-017-9418-5 |s2cid=43555632 }}</ref>
* A study on the anatomy of the inner ear and surrounding structures in ''[[Biology:Priacodon|Priacodon]] fruitaensis'' and two isolated [[Biology:Crown group#Stem groups|stem]] [[Biology:Theria|theria]]n petrosal specimens from the [[Earth:Aptian|Aptian]] or [[Earth:Albian|Albian]] Höövör locality (Mongolia) is published by Harper & Rougier (2019).<ref>{{cite journal |author1=Tony Harper |author2=Guillermo W. Rougier |year=2019 |title=Petrosal morphology and cochlear function in Mesozoic stem therians |journal=PLOS ONE |volume=14 |issue=8 |pages=e0209457 |doi=10.1371/journal.pone.0209457 |pmid=31412094 |pmc=6693738 |bibcode=2019PLoSO..1409457H |doi-access=free }}</ref>
* A study comparing the anatomy and function of skulls of rodents and [[Biology:Multituberculata|multituberculates]], and evaluating their implications for inferring whether the extinction of multituberculates was caused by competition with rodents, is published by Adams ''et al.'' (2019).<ref>{{cite journal |author1=Neil F. Adams |author2=Emily J. Rayfield |author3=Philip G. Cox |author4=Samuel N. Cobb |author5=Ian J. Corfe |year=2019 |title=Functional tests of the competitive exclusion hypothesis for multituberculate extinction |journal=Royal Society Open Science |volume=6 |issue=3 |pages=Article ID 181536 |doi=10.1098/rsos.181536 |pmid=31032010 |pmc=6458384 |bibcode=2019RSOS....681536A }}</ref>
* A study on the anatomy of skull and teeth of ''[[Biology:Maotherium|Maotherium]] sinense'', based on data from a three-dimensionally preserved skull from the Lower Cretaceous [[Earth:Yixian Formation|Yixian Formation]] ({{wipe|China}}), is published online by Plogschties & Martin (2019).<ref>{{cite journal |author1=Thorsten Plogschties |author2=Thomas Martin |year=2019 |title=New information on the maxilla, dentary, and dentition of ''Maotherium sinense'', with comments on the zhangheotheriid dental formulae |journal=PalZ |volume=94 |issue=1 |pages=155–165 |doi=10.1007/s12542-019-00460-3 |s2cid=189950277 }}</ref>
* A study on the anatomy of the postcranial skeleton of ''[[Biology:Henkelotherium|Henkelotherium]] guimarotae'' is published online by Jäger, Luo & Martin (2019).<ref>{{cite journal |author1=K. R. K. Jäger |author2=Z.-X. Luo |author3=T. Martin |year=2019 |title=Postcranial skeleton of ''Henkelotherium guimarotae'' (Cladotheria, Mammalia) and locomotor adaptation |journal=Journal of Mammalian Evolution |volume=27 |issue=3 |pages=349–372 |doi=10.1007/s10914-018-09457-2 |s2cid=145881918 }}</ref>
* Description of new [[Biology:Tooth|dental]] and dentary specimens of ''[[Biology:Reigitherium|Reigitherium]]'' from the [[Earth:Upper Cretaceous|Upper Cretaceous]] [[Earth:La Colonia Formation|La Colonia Formation]] ({{wipe|Argentina}}) and a study on the phylogenetic relationships of this taxon is published by Harper, Parras & Rougier (2019).<ref>{{Cite journal|author1=Tony Harper |author2=Ana Parras |author3=Guillermo W. Rougier |year=2019 |title=''Reigitherium'' (Meridiolestida, Mesungulatoidea) an enigmatic Late Cretaceous mammal from Patagonia, Argentina: morphology, affinities, and dental evolution |journal=Journal of Mammalian Evolution |volume=26 |issue=4 |pages=447–478 |doi=10.1007/s10914-018-9437-x |s2cid=21654055 }}</ref>

{| class="wikitable sortable" align="center" width="100%"
|-
! Name !! Novelty !! Status !! Authors !! Age !! Type locality !! Country !! Notes !! Images
|-
| ''Cimbriodon''<ref>{{Cite journal|author1=Thomas Martin |author2=Alexander O. Averianov |author3=Julia A. Schultz |author4=Achim H. Schwermann |author5=Oliver Wings |year=2019 |title=Late Jurassic multituberculate mammals from Langenberg Quarry (Lower Saxony, Germany) and palaeobiogeography of European Jurassic multituberculates |journal=Historical Biology: An International Journal of Paleobiology |volume=33 |issue=5 |pages=616–629 |doi=10.1080/08912963.2019.1650274 |s2cid=201201555 }}</ref>
| Gen. et sp. nov
| Valid
| Martin ''et al.''
| Late Jurassic (Kimmeridgian)
| [[Earth:Süntel Formation|Süntel]]
| {{Flag|Germany}}
| A [[Biology:Multituberculata|multituberculate]]. Genus includes new species ''C. multituberculatus''.
| 
|-
| ''[[Biology:Cimolodon|Cimolodon akersteni]]''<ref>{{cite journal |author1=Lucas N. Weaver |author2=Gregory P. Wilson |author3=L. J. Krumenacker |author4=Kayla Mclaughlin |author5=Jason R. Moore |author6=David J. Varricchio |year=2019 |title=New multituberculate mammals from the mid-Cretaceous (lower Cenomanian) Wayan Formation of southeastern Idaho and implications for the early evolution of Cimolodonta |journal=Journal of Vertebrate Paleontology |volume=39 |issue=2 |pages=e1604532 |doi=10.1080/02724634.2019.1604532 |s2cid=196655261 }}</ref>
| Sp. nov
| Valid
| Weaver ''et al.''
| [[Earth:Late Cretaceous|Late Cretaceous]] ([[Earth:Cenomanian|Cenomanian]])
| [[Earth:Wayan Formation|Wayan]]
| {{Flag|United States}}<br />({{Flag|Idaho}})
| A [[Biology:Multituberculata|multituberculate]]
| 
|-
| ''Dolichoprion''<ref>{{Cite journal|author1=Nao Kusuhashi |author2=Yuan-Qing Wang |author3=Xun Jin |year=2020 |title=A new eobaatarid multituberculate (Mammalia) from the Lower Cretaceous Fuxin Formation, Fuxin-Jinzhou Basin, Liaoning, northeastern China |journal=Journal of Mammalian Evolution |volume=27 |issue=4 |pages=605–623 |doi=10.1007/s10914-019-09481-w |s2cid=201283262 }}</ref>
| Gen. et sp. nov
| Valid
| Kusuhashi, Wang & Jin
| [[Earth:Early Cretaceous|Early Cretaceous]]
| Fuxin
| {{Flag|China}}
| An [[Biology:Eobaataridae|eobaatarid]] [[Biology:Multituberculata|multituberculate]]. Genus includes new species ''D. lii''. Announced in 2019; the final version of the article naming it was published in 2020.
|
|-
| ''Fuxinoconodon''<ref>{{cite journal |author1=Nao Kusuhashi |author2=Yuan-Qing Wang |author3=Chuan-Kui Li |author4=Xun Jin |year=2020 |title=New gobiconodontid (Eutriconodonta, Mammalia) from the Lower Cretaceous Shahai and Fuxin formations, Liaoning, China |journal=Vertebrata PalAsiatica |volume=58 |issue=1 |pages=45–66 |doi=10.19615/j.cnki.1000-3118.190724 }}</ref>
| Gen. et sp. nov
| Valid
| Kusuhashi ''et al.''
| [[Earth:Early Cretaceous|Early Cretaceous]] ([[Earth:Aptian|Aptian]]–[[Earth:Albian|Albian]])
| Fuxin
| {{Flag|China}}
| A member of the family [[Biology:Gobiconodontidae|Gobiconodontidae]]. The type species is ''F. changi''. Announced in 2019; the final version of the article naming it was published in 2020.
| 
|-
| ''[[Biology:Galulatherium|Galulatherium]]''<ref>{{Cite journal|author1=Patrick M. O'Connor |author2=David W. Krause |author3=Nancy J. Stevens |author4=Joseph R. Groenke |author5=Ross D.E. MacPhee |author6=Daniela C. Kalthoff |author7=Eric M. Roberts |year=2019 |title=A new mammal from the Turonian–Campanian (Upper Cretaceous) Galula Formation, southwestern Tanzania |journal=Acta Palaeontologica Polonica |volume=64 |issue=1 |pages=65–84 |doi=10.4202/app.00568.2018 |doi-access=free }}</ref>
| Gen. et sp. nov
| Valid
| O'Connor ''et al.''
| [[Earth:Late Cretaceous|Late Cretaceous]] ([[Earth:Turonian|Turonian]]–[[Earth:Campanian|Campanian]])
| [[Earth:Galula Formation|Galula]]
| {{Flag|Tanzania}}
| Possibly a member of [[Biology:Gondwanatheria|Gondwanatheria]] and the family [[Biology:Sudamericidae|Sudamericidae]]. The type species is ''G. jenkinsi''.
|
|-
| ''Guibaatar''<ref>{{cite journal |author1=John R. Wible |author2=Sarah L. Shelley |author3=Shundong Bi |year=2019 |title=New genus and species of djadochtatheriid multituberculate (Allotheria, Mammalia) from the Upper Cretaceous Bayan Mandahu Formation of Inner Mongolia |journal=Annals of Carnegie Museum |volume=85 |issue=4 |pages=285–327 |doi=10.2992/007.085.0401 |s2cid=210840006 |url=https://www.researchgate.net/publication/338202993 }}</ref>
| Gen. et sp. nov
| Valid
| Wible, Shelley & Bi
| [[Earth:Late Cretaceous|Late Cretaceous]] ([[Earth:Campanian|Campanian]])
| [[Earth:Bayan Mandahu Formation|Bayan Mandahu]]
| {{Flag|China}}
| A [[Biology:Djadochtatheriidae|djadochtatheriid]] [[Biology:Multituberculata|multituberculate]]. The type species is ''G. castellanus''.
| 
|-
| ''[[Biology:Jeholbaatar|Jeholbaatar]]''<ref>{{Cite journal|author1=Haibing Wang |author2=Jin Meng |author3=Yuanqing Wang |year=2019 |title=Cretaceous fossil reveals a new pattern in mammalian middle ear evolution |journal=Nature |volume=576 |issue=7785 |pages=102–105 |doi=10.1038/s41586-019-1792-0 |pmid=31776514 |bibcode=2019Natur.576..102W |s2cid=208330587 }}</ref>
| Gen. et sp. nov
| Valid
| Wang, Meng & Wang
| [[Earth:Early Cretaceous|Early Cretaceous]] ([[Earth:Aptian|Aptian]])
| [[Earth:Jiufotang Formation|Jiufotang]]
| {{Flag|China}}
| An [[Biology:Eobaataridae|eobaatarid]] [[Biology:Multituberculata|multituberculate]]. Genus includes new species ''J. kielanae''.
| 
|-
| ''[[Biology:Maiopatagium|Maiopatagium sibiricum]]''<ref name=Sharypovoia />
| Sp. nov
| Valid
| Averianov ''et al.''
| Middle Jurassic
| [[Earth:Itat Formation|Itat]]
| {{Flag|Russia}}
| A member of [[Biology:Euharamiyida|Euharamiyida]]
| 
|-
| ''[[Biology:Microdocodon|Microdocodon]]''<ref>{{Cite journal|author1=Chang-Fu Zhou |author2=Bhart-Anjan S. Bhullar |author3=April I. Neander |author4=Thomas Martin |author5=Zhe-Xi Luo |year=2019 |title=New Jurassic mammaliaform sheds light on early evolution of mammal-like hyoid bones |journal=Science |volume=365 |issue=6450 |pages=276–279 |doi=10.1126/science.aau9345 |pmid=31320539 |bibcode=2019Sci...365..276Z |s2cid=197663503 }}</ref>
| Gen. et sp. nov
| Valid
| Zhou ''et al.''
| Middle Jurassic
| Daohugou
| {{Flag|China}}
| A member of [[Biology:Docodonta|Docodonta]]. Genus includes new species ''M. gracilis''.
| 
|-
| ''Origolestes''<ref>{{cite journal |author1=Fangyuan Mao |author2=Yaoming Hu |author3=Chuankui Li |author4=Yuanqing Wang |author5=Morgan Hill Chase |author6=Andrew K. Smith |author7=Jin Meng |year=2020 |title=Integrated hearing and chewing modules decoupled in a Cretaceous stem therian mammal |journal=Science |volume=367 |issue=6475 |pages=305–308 |doi=10.1126/science.aay9220 |pmid=31806694 |bibcode=2020Sci...367..305M |s2cid=208768326 }}</ref>
| Gen. et sp. nov
| 
| Mao ''et al.''
| [[Earth:Early Cretaceous|Early Cretaceous]] ([[Earth:Aptian|Aptian]])
| [[Earth:Yixian Formation|Yixian]]
| {{Flag|China}}
| A member of the family [[Biology:Zhangheotheriidae|Zhangheotheriidae]]. Genus includes new species ''O. lii''. Announced in 2019; the final version of the article naming it was published in [[Biology:2020 in mammal paleontology|2020]].
|
|-
| ''Qishou''<ref>{{Cite journal|author1=Fang-Yuan Mao |author2=Jin Meng |year=2019 |title=A new haramiyidan mammal from the Jurassic Yanliao Biota and comparisons with other haramiyidans |journal=Zoological Journal of the Linnean Society |volume=186 |issue=2 |pages=529–552 |doi=10.1093/zoolinnean/zly088 }}</ref>
| Gen. et sp. nov
| Valid
| Mao & Meng
| Late Jurassic (Oxfordian)
| [[Earth:Tiaojishan Formation|Tiaojishan]]
| {{Flag|China}}
| A member of [[Biology:Euharamiyida|Euharamiyida]]. Genus includes new species ''Q. jizantang''.
|
|-
| ''Sharypovoia''<ref name=Sharypovoia>{{Cite journal|author1=Alexander O. Averianov |author2=Thomas Martin |author3=Alexey V. Lopatin |author4=Julia A. Schultz |author5=Rico Schellhorn |author6=Sergei Krasnolutskii |author7=Pavel Skutschas |author8=Stepan Ivantsov |year=2019 |title=Haramiyidan mammals from the Middle Jurassic of Western Siberia, Russia. Part 1: Shenshouidae and ''Maiopatagium'' |journal=Journal of Vertebrate Paleontology |volume=39 |issue=4 |pages=e1669159 |doi=10.1080/02724634.2019.1669159 |s2cid=209439988 }}</ref>
| Gen. et 2 sp. nov
| Valid
| Averianov ''et al.''
| Middle Jurassic
| [[Earth:Itat Formation|Itat]]
| {{Flag|Russia}}
| A member of [[Biology:Euharamiyida|Euharamiyida]] belonging to the family [[Biology:Shenshouidae|Shenshouidae]]. Genus includes new species ''S. arimasporum'' and ''S. magna''.
| 
|-
| ''[[Biology:Storchodon|Storchodon]]''<ref>{{cite journal |author1=Thomas Martin |author2=Alexander O. Averianov |author3=Kai R. K. Jäger |author4=Achim H. Schwermann |author5=Oliver Wings |year=2019 |title=A large morganucodontan mammaliaform from the Late Jurassic of Germany |journal=Fossil Imprint |volume=75 |issue=3–4 |pages=504–509 |doi=10.2478/if-2019-0030 |s2cid=210921885 |doi-access=free }}</ref>
| Gen. et sp. nov
| Valid
| Martin ''et al.''
| Late Jurassic (Kimmeridgian)
| [[Earth:Süntel Formation|Süntel]]
| {{Flag|Germany}}
| A member of [[Biology:Morganucodonta|Morganucodonta]]. The type species is ''S. cingulatus''.
|
|-
|}

==References==
{{reflist}}

[[Category:Prehistoric mammals]]

{{Sourceattribution|2019 in mammal paleontology|1}}