Biology:Caseodus

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Short description: Extinct genus of sharks

Caseodus
Temporal range: Carboniferous - Early Triassic 355–247.2 Ma
Caseodus2.jpg
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Holocephali
Order: Eugeneodontida
Family: Caseodontidae
Genus: Caseodus
Zangerl, 1981
Species[1]
  • C. basalis Zangerl, 1981
  • C. eatoni Zangerl, 1981
  • C. varidentis Mutter & Neumann, 2008

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

  1. Cimimurri, D.J; Fahrenbach, M.D. (2002). "Chondrichthyes from the upper part of the Minnelusa Formation (Middle Pennsylvanian: Desmoinesian), Meade County, South Dakota". Proceedings of the South Dakota Academy of Science 81. http://www.sdaos.org/wp-content/uploads/pdfs/2002/81-92.pdf. 
  2. "Fossilworks: Caseodus". http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=34451. 
  3. Lionel Calvin, Allison (2008) Fishes and the breakup of Pangea p. 12
  4. 4.0 4.1 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. 3A. Chondrichthyes I (Paleozoic elasmobranchii). Gustav Fischer. ISBN 3-437-30337-6. OCLC 1116152115. 

Wikidata ☰ Q5048412 entry