The Tacuarembó Formation is a Late Jurassic (Kimmeridgian) geologic formation of the eponymous department in northern Uruguay. The fluvial to lacustrine sandstones, siltstones and mudstones preserve ichnofossils, turtles, crocodylomorphs, fish and invertebrates (bivalves and gastropods).
Fossil content
The following fossils have been reported from the formation:[1]
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Color key
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Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.
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Dinosaurs
Theropods
Pterosaurs
| Pterosaurs of the Tacuarembó Formation
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| Genus
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Species
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Location
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Stratigraphic position
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Material
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Notes
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Image
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| Tacuadactylus[9]
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T. luciae
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Tacuarembó Department, Uruguay
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Kimmeridgian
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A gnathosaurine ctenochasmatid
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Crocodylomorphs
Turtles
| Turtles of the Tacuarembó Formation
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| Genus
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Species
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Location
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Stratigraphic position
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Material
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Notes
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Image
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| Tacuarembemys[12][13]
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T. kusterae
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Tacuarembó Department, Uruguay
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Kimmeridgian
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An turtle
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| Testudines Indet.[11]
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Indeterminate
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Tacuarembó Department, Uruguay
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Kimmeridgian
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An turtle
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Fish
Cartilaginous Fish
| Cartilaginous Fish of the Tacuarembó Formation
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| Genus
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Species
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Location
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Stratigraphic position
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Material
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Notes
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Image
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| Priohybodus[14][15]
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P. arambourgi
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Tacuarembó Department, Uruguay
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Kimmeridgian
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A hybodontid shark
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Lobe-finned Fish
Ray-finned Fish
Mollusks
Bivalves
Gastropods
| Gastropods of the Tacuarembó Formation
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| Genus
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Species
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Location
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Stratigraphic position
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Material
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Notes
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Image
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| Viviparidae Indet.[11]
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Indeterminate
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Tacuarembó Department, Uruguay
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Kimmeridgian
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Ichnofossils
| Ichnofossils of the Tacuarembó Formation
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| Genus
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Species
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Location
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Stratigraphic position
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Material
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Notes
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Image
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| Ornithopoda Indet.[18]
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Indeterminate
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Tacuarembó Department, Uruguay
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Kimmeridgian
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| Sauropoda Indet.[18]
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Indeterminate
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Tacuarembó Department, Uruguay
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Kimmeridgian
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| Theropoda Indet.[18]
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Indeteminate
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Tacuarembó Department, Uruguay
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Kimmeridgian
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See also
- List of fossiliferous stratigraphic units in Uruguay
References
- ↑ Tacuarembó Formation at Fossilworks.org
- ↑ Hendrickx, C.; Soto Núñez, M.; Araújo, R.; Meso, J. G.; Maganuco, S.; Ben-Salahuddin, A. (2025). "Isolated abelisaurid teeth from Gondwana and dental evolution in Abelisauridae". Ameghiniana. doi:10.5710/AMGH.17.09.2025.3654. https://www.ameghiniana.org.ar/index.php/ameghiniana/libraryFiles/downloadPublic/145.
- ↑ 3.0 3.1 3.2 Soto, Matías; Delcourt, Rafael; Langer, Max. C.; Perea, Daniel (2023). "The first record of Abelisauridae (Theropoda: Ceratosauria) from Uruguay (Late Jurassic, Tacuarembó Formation)". Historical Biology 35 (12): 2362-2371. doi:10.1080/08912963.2022.2140425.
- ↑ Lagos, Leo (12 November 2022). "Uruguay tiene un tercer dinosaurio carnívoro jurásico: con ustedes, el abelisáurido delatado por un trozo de diente de Tacuarembó" (in es). https://ladiaria.com.uy/ciencia/articulo/2022/11/uruguay-tiene-un-tercer-dinosaurio-carnivoro-jurasico-con-ustedes-el-abelisaurido-delatado-por-un-trozo-de-diente-de-tacuarembo/.
- ↑ Soto & Perea, 2008
- ↑ Soto, Matías; Toriño, Pablo; Perea, Daniel (2020-11-01). "Ceratosaurus (Theropoda, Ceratosauria) teeth from the Tacuarembó Formation (Late Jurassic, Uruguay)" (in en). Journal of South American Earth Sciences 103. doi:10.1016/j.jsames.2020.102781. ISSN 0895-9811. Bibcode: 2020JSAES.10302781S. http://www.sciencedirect.com/science/article/pii/S0895981120303242.
- ↑ 7.0 7.1 Perea et al., 2003
- ↑ Soto, Matías; Toriño, Pablo; Perea, Daniel (2020-03-01). "A large sized megalosaurid (Theropoda, Tetanurae) from the late Jurassic of Uruguay and Tanzania" (in en). Journal of South American Earth Sciences 98. doi:10.1016/j.jsames.2019.102458. ISSN 0895-9811. Bibcode: 2020JSAES..9802458S. http://www.sciencedirect.com/science/article/pii/S089598111930505X.
- ↑ Soto, M.; Montenegro, F.; Mesa, V.; Perea, D. (2021). "A new ctenochasmatid (Pterosauria, Pterodactyloidea) from the late Jurassic of Uruguay". Journal of South American Earth Sciences 111. doi:10.1016/j.jsames.2021.103472.
- ↑ Fortier et al., 2011
- ↑ 11.0 11.1 11.2 11.3 11.4 11.5 11.6 Soto & Perea, 2010
- ↑ Perea et al., 2014
- ↑ Perea, Daniel; Soto, Matías; Veroslavsky, Gerardo; Martínez, Sergio; Ubilla, Martín (2009). "A Late Jurassic fossil assemblage in Gondwana: Biostratigraphy and correlations of the Tacuarembó Formation, Parana Basin, Uruguay" (in en). Journal of South American Earth Sciences 28 (2): 168–179. doi:10.1016/j.jsames.2009.03.009.
- ↑ Soto et al., 2012
- ↑ Perea, Daniel; Ubilla, Martin; Rojas, Alejandra; Goso, Cesar A. (November 2001). "The West Gondwanan Occurrence Of The Hybodontid Shark Priohybodus, And The Late Jurassic-Early Cretaceous Age Of The Tacuarembo Formation, Uruguay" (in en). Palaeontology 44 (6): 1227–1235. doi:10.1111/1475-4983.00222. ISSN 0031-0239.
- ↑ Toriño, Pablo; Soto, Matías; Perea, Daniel; Salgado De Carvalho, Marise Sardenberg (2021-04-01). "New findings of the coelacanth Mawsonia Woodward (Actinistia, Latimerioidei) from the Late Jurassic – Early Cretaceous of Uruguay: Novel anatomical and taxonomic considerations and an emended diagnosis for the genus" (in en). Journal of South American Earth Sciences 107. doi:10.1016/j.jsames.2020.103054. ISSN 0895-9811.
- ↑ Martinez, Sergio; Figueiras, Alfredo; da Silva, Jorge S. (1993). "A new Unionoidea (Mollusca, Bivalvia) from the Tacuarembó Formation (Upper Triassic–Upper Jurassic), Uruguay". Journal of Paleontology 67 (6): 962–965. doi:10.1017/s0022336000025270. ISSN 0022-3360.
- ↑ 18.0 18.1 18.2 Mesa & Perea, 2015
Bibliography
- Mesa, V.; Perea, D. (2015), "First record of theropod and ornithopod tracks and detailed description of sauropod trackways from the Tacuarembó Formation (Late Jurassic–?Early Cretaceous) of Uruguay", Ichnos 22 (2): 109–121, doi:10.1080/10420940.2015.1030075
- Perea, D.; Soto, M.; Sterli, J.; Mesa, V.; Torino, P.; Roland, G.; Da Silva, J. (2014), "Tacuarembemys kusterae, gen. et sp. nov., a new Late Jurassic-?earliest Cretaceous continental turtle from western Gondwana", Journal of Vertebrate Paleontology 34 (6): 1329–1341, doi:10.1080/02724634.2014.859620
- Soto, M.; Perea, D.; Torino, P. (2012), "New remains of Priohybodus arambourgi (Hybodontiformes: Hybodontidae) from Late Jurassic-earliest Cretaceous deposits in Uruguay", Cretaceous Research 35: 118–123, doi:10.1016/j.cretres.2011.12.001
- Fortier, D.; Perea, D.; Schultz, C. (2011), "Redescription and phylogenetic relationships of Meridiosaurus vallisparadisi, a pholidosaurid from the Late Jurassic of Uruguay", Zoological Journal of the Linnean Society 163: S257–S272, doi:10.1111/j.1096-3642.2011.00722.x
- Soto, M.; Perea, D. (2010), "Late Jurassic lungfishes (Dipnoi) from Uruguay, with comments on the systematics of Gondwanan ceradontiforms", Journal of Vertebrate Paleontology 30 (4): 1049–1058, doi:10.1080/02724634.2010.483540
- Soto, M.; Perea, D. (2008), "A ceratosaurid (Dinosauria, Theropoda) from the Late Jurassic–Early Cretaceous of Uruguay", Journal of Vertebrate Paleontology 28 (2): 439–444, doi:10.1671/0272-4634(2008)28[439:ACDTFT2.0.CO;2]
- Perea, D.; Ubilla, M.; Rojas, A. (2003), "First report of theropods from the Tacuarembó Formation (Late Jurassic–Early Cretaceous), Uruguay", Alcheringa 27 (2): 79–83, doi:10.1080/03115510308619548
- Perea, D.; Ubilla, M.; Rojas, A.; Goso, C.A. (2001), "The West Gondwanan occurrence of the hybodontid shark Priohybodus, and the Late Jurassic–Early Cretaceous age of the Tacuarembó Formation, Uruguay", Palaeontology 44 (6): 1227–1235, doi:10.1111/1475-4983.00222
Template:Stratigraphic formations of Uruguay
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