Orodus

Orodus; Temporal range: Bashkirian–Cisuralian PreꞒ Ꞓ O S D C P T J K Pg N
	Fossil specimen (FMNH PF 2201) of O. greggi, Field Museum of Natural History
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Order:	†Orodontida
Family:	†Orodontidae
Genus:	†Orodus; Agassiz, 1838
Species
	†O. ipeunaensis; †O. plicatus; †O. carinatus;
Synonyms
	Oreodon;

Orodus (from Greek: ωραίος oraíos, 'beautiful' and Greek: ὀδούς odoús 'tooth')^[1] is an extinct genus of cartilaginous fish that lived from the late Pennsylvanian to the early Permian in what is now North America. O. greggi reached around 2–4 metres (6.6–13.1 ft) long, while O. micropterygius just reached 1 metre (3.3 ft).^[2]^[3] It was a member of the holocephali subclass, meaning that it was more closely related to chimaeras and their relatives (eugeneodonts, petalodonts, etc), and not elasmobranchs like sharks and rays.

References

^ Roberts, George (1839). An etymological and explanatory dictionary of the terms and language of geology. London: Longman, Orme, Brown, Green, & Longmans. p. 126. Retrieved 31 December 2021.
^ Ginter, M.; Hampe, O.; Duffin, C. (2010). Handbook of Paleoichthyology. Volume 3D. Chondrichthyes. Paleozoic Elasmobranchii: Teeth. Munich: Verlag Dr. Friedrich Pfeil. ISBN 978-3-89937-116-1.
^ Signor, Philip W.; Brett, Carlton E. (1984). "The mid-Paleozoic precursor to the Mesozoic marine revolution". Paleobiology. 10 (2): 229–245. doi:10.1017/S0094837300008174. ISSN 0094-8373.

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Biology of Sharks and Their Relatives (Marine Biology) by Jeffrey C. Carrier, John A. Musick, and Michael R. Heithaus
Kansas Geology: An Introduction to Landscapes, Rocks, Minerals, and Fossils by Rex Buchanan
Major Events in Early Vertebrate Evolution (Systematics Association Special Volume) by Per Erik Ahlberg

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