Caseodus

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][5]

Caseodus
Temporal range: Carboniferous - Early Triassic) 355–247.2 Ma
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Order: †Eugeneodontida
Family: †Caseodontidae
Genus: †Caseodus
Zangerl, 1981
Species[1]
  • †C. basalis Zangerl, 1981
  • †C. eatoni Zangerl, 1981
  • †C. varidentis Mutter & Neumann, 2008

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

References
  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. http://fossilworks.org/?a=taxonInfo&taxon_no=34456
  3. Lionel Calvin, Allison (2008) Fishes and the breakup of Pangea p. 12
  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. http://fossilworks.org/?a=taxonInfo&taxon_no=34456


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