Biology:Legnonotus
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Legnonotus is an extinct genus of prehistoric marine ray-finned fish from the Middle to Late Triassic of Europe.[1] It is the oldest known member of the family Macrosemiidae.[2][3]
Three species are known, although the assignment of the oldest species to this genus is uncertain:[3][4][5]
- L. cothamensis Egerton, 1854 (type species) - Late Triassic (Rhaetian) of England (Westbury Formation)[6]
- L. krambergeri Bartram, 1977 - Late Triassic (Norian) of Austria (Seefelder Formation) & Italy (Calcare di Zorzino)[7], potentially Rhaetian of Austria (Kössen Formation)
- ?L. obtusus Tintori & Renesto, 1983 - Middle Triassic (Ladinian) of Italy (Meride Limestone of Monte San Giorgio)
It is likely the sister genus to Macrosemius, the type genus of the family.[8] Based on its morphology, it likely inhabited reef habitats, where it darted among raised structures to hunt small invertebrates. Its forked caudal fin may have also allowed it to inhabit more open-water habitats.[9]
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See also
- Prehistoric fish
- List of prehistoric bony fish
References
- ↑ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology 364: 560. Archived from the original on 2011-07-23. https://web.archive.org/web/20110723131237/http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=611&rank=class. Retrieved 2009-02-27.
- ↑ González-Rodríguez, Katia; Applegate, Shelton P.; Espinosa-Arrubarrena, Luis (2004-06-11). "A New World macrosemiid (Pisces: Neopterygii—Halecostomi) from the Albian of Mexico". Journal of Vertebrate Paleontology (Taylor & Francis) 24 (2): 281–289. doi:10.1671/1862. ISSN 0272-4634. https://doi.org/10.1671/1862.
- ↑ 3.0 3.1 Tintori, A.; Renesto, S. (1983). "THE MACROSEMIIDAE (PISCES, ACTINOPTERYGII) FROM THE UPPER TRIASSIC OF LOMBARDY (N. ITALY)" (in en). RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA 89 (2). doi:10.54103/2039-4942/13442. ISSN 2039-4942. https://riviste.unimi.it/index.php/RIPS/article/view/13442.
- ↑ "PBDB Taxon" (in en). https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=35225.
- ↑ Romano, Carlo; Koot, Martha B.; Kogan, Ilja; Brayard, Arnaud; Minikh, Alla V.; Brinkmann, Winand; Bucher, Hugo; Kriwet, Jürgen (February 2016). "Permian-Triassic Osteichthyes (bony fishes): diversity dynamics and body size evolution". Biological Reviews 91 (1): 106–147. doi:10.1111/brv.12161. PMID 25431138. https://hal.science/hal-01253154.
- ↑ Woodward, Arthur Smith (1895) (in en). Catalogue of the Fossil Fishes in the British Museum (Natural History): containing the Actinopterygian Teleostomi of the orders Chondrostei (concluded), Protospondyli, Aetheospondyli, and Isospondyli (in part). Trustees of the British Museum. https://www.google.com/books/edition/Catalogue_of_the_Fossil_Fishes_in_the_Br/PwfNqZmEWYIC?.
- ↑ Tintori, Andrea (1998-01-01). "Fish biodiversity in the marine Norian (Late Triassic) of northern Italy: The first Neopterygian radiation". Italian Journal of Zoology (Taylor & Francis) 65 (sup1): 193–198. doi:10.1080/11250009809386812. ISSN 1125-0003. https://doi.org/10.1080/11250009809386812.
- ↑ González-Rodríguez, Katia; Applegate, Shelton P.; Espinosa-Arrubarrena, Luis (2004-06-11). "A New World macrosemiid (Pisces: Neopterygii—Halecostomi) from the Albian of Mexico". Journal of Vertebrate Paleontology (Taylor & Francis) 24 (2): 281–289. doi:10.1671/1862. ISSN 0272-4634. https://doi.org/10.1671/1862.
- ↑ Cawley, John J.; Marramà, Giuseppe; Carnevale, Giorgio; Villafaña, Jaime A.; López-Romero, Faviel A.; Kriwet, Jürgen (2021). "Rise and fall of †Pycnodontiformes: Diversity, competition and extinction of a successful fish clade" (in en). Ecology and Evolution 11 (4): 1769–1796. doi:10.1002/ece3.7168. ISSN 2045-7758. PMID 33614003. PMC 7882952. https://onlinelibrary.wiley.com/doi/abs/10.1002/ece3.7168.
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