Caseodus

Caseodus; Temporal range: Carboniferous - Early Triassic 355–247.2 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Holocephali
Order:	†Eugeneodontida
Family:	†Caseodontidae
Genus:	†Caseodus; Zangerl, 1981
Species
	†C. basalis Zangerl, 1981; †C. eatoni Zangerl, 1981; †C. varidentis Mutter & Neumann, 2008;

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Caseodus is an extinct genus of eugeneodontid holocephalian from the Carboniferous of the United States (Illinois, Indiana, Kansas, South Dakota) and the Early Triassic of Canada (British Columbia).^[2] It was of medium size, measuring 1–1.5 m (3.3–4.9 ft) in length.^[3]^[4]

Eugeneodontida are an extinct order of Chondrichthyes. They are characterized by the presence of tooth whorls. They include iconic genera, such as Helicoprion ("buzz-saw shark"), Ornithoprion, Edestus or Fadenia. Caseodus is one of the few eugeneodontid genera that survived the end-Permian mass extinction event. It is one of the last surviving genera of this clade.^[4]

Caseodus is named after the late paleoichthyologist Gerard Case.^[5]

References

^ Cimimurri, D.J; Fahrenbach, M.D. (2002). "Chondrichthyes from the upper part of the Minnelusa Formation (Middle Pennsylvanian: Desmoinesian), Meade County, South Dakota" (PDF). Proceedings of the South Dakota Academy of Science. 81.
^ "Fossilworks: Caseodus".
^ Lionel Calvin, Allison (2008) Fishes and the breakup of Pangea p. 12
^ ^a ^b Mutter R.J., Neuman A.G. (2008): New eugeneodontid sharks from the Lower Triassic Sulphur Mountain Formation of Western Canada. In: Fishes and the Break-up of Pangaea. Cavin L, Longbottom A, Richter M, editors. Geol Soc London Spec Publ 295: 941
^ R., Zangerl (1981). Handbook of paleoichthyology. Vol. 3A. Chondrichthyes I (Paleozoic elasmobranchii). Gustav Fischer. ISBN 3-437-30337-6. OCLC 1116152115.

Froese, Rainer and Pauly, Daniel, eds. (2008). Species of Caseodus in FishBase. October 2008 version.

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[1] Cimimurri, D.J; Fahrenbach, M.D. (2002). "Chondrichthyes from the upper part of the Minnelusa Formation (Middle Pennsylvanian: Desmoinesian), Meade County, South Dakota" (PDF). Proceedings of the South Dakota Academy of Science. 81.

[2] "Fossilworks: Caseodus".

[3] Lionel Calvin, Allison (2008) Fishes and the breakup of Pangea p. 12

[Mutter2008-4] Mutter R.J., Neuman A.G. (2008): New eugeneodontid sharks from the Lower Triassic Sulphur Mountain Formation of Western Canada. In: Fishes and the Break-up of Pangaea. Cavin L, Longbottom A, Richter M, editors. Geol Soc London Spec Publ 295: 941

[5] R., Zangerl (1981). Handbook of paleoichthyology. Vol. 3A. Chondrichthyes I (Paleozoic elasmobranchii). Gustav Fischer. ISBN 3-437-30337-6. OCLC 1116152115.

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