Biology:Echidnocephalus
Echidnocephalus (Greek for "Echidna's head") is an extinct genus of prehistoric halosaur known from the Late Cretaceous. It is the earliest known definitive member of the order Notacanthiformes.[1]
It contains one definitive species known from complete and partial specimens: E. troscheli (=E. tenuicaudus von der Marck, 1858) from the late Campanian-aged Ahlen Formation of Westphalia, Germany.[2] These body fossils suggest an animal already very similar to modern halosaurs.[1]
In addition, two disputed species known only from isolated fossil scales very similar to those of modern halosaurs have been described from North America: ?E. americanus Cockerell, 1919 from the Coniacian-aged Mancos Shale of Wyoming and ?E. pacificus Cockerell, 1919 from the Maastrichtian-aged Moreno Formation of California.[3][4]
See also
- Laytonia, a Miocene genus of fossil halosaur
- Prehistoric fish
- List of prehistoric bony fish
References
- ↑ 1.0 1.1 Near, Thomas J.; Thacker, Christine E. (2024-04-18). "Phylogenetic Classification of Living and Fossil Ray-Finned Fishes (Actinopterygii)". Bulletin of the Peabody Museum of Natural History 65 (1): 101. doi:10.3374/014.065.0101. ISSN 0079-032X. Bibcode: 2024BPMNH..65..101N. https://bioone.org/journals/bulletin-of-the-peabody-museum-of-natural-history/volume-65/issue-1/014.065.0101/Phylogenetic-Classification-of-Living-and-Fossil-Ray-Finned-Fishes-Actinopterygii/10.3374/014.065.0101.full.
- ↑ 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.
- ↑ (in en) Professional Paper. U.S. Government Printing Office. 1919. https://books.google.com/books?id=43fdNoV0ybIC.
- ↑ "PBDB Taxon". https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=35359.
Template:Elopomorpha Wikidata ☰ Q18609718 entry
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