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Varanodon

From Wikipedia, the free encyclopedia
Extinct genus of tetrapods

Varanodon
Temporal range:Roadian
Life restoration ofVaranodon agilis
Scientific classificationEdit this classification
Domain:Eukaryota
Kingdom:Animalia
Phylum:Chordata
Clade:Synapsida
Family:Varanopidae
Subfamily:Varanopinae
Genus:Varanodon
Olson, 1965
Type species
Varanodon agilis
Olson, 1965

Varanodon is an extinct genus ofamniotes from the familyVaranopidae. It has been found in theChickasha Formation ofOklahoma, which dates to theRoadian stage of theMiddle Permian.[1] The largest varanopid known at the time of its description, with a skull length of 17.5 centimetres (6.9 in),[2] it was closely related to and lived alongside its much larger relativeWatongia.[3] The two may represent growth stages of a single animal.[4]

See also

[edit]

References

[edit]
  1. ^Laurin, Michel; Hook, Robert W. (2022)."The age of North America's youngest Paleozoic continental vertebrates: a review of data from the Middle Permian Pease River (Texas) and El Reno (Oklahoma) Groups".BSGF - Earth Sciences Bulletin.193: 10.doi:10.1051/bsgf/2022007.ISSN 1777-5817.
  2. ^Olson, E.C. (1965)."New Permian vertebrates from the Chickasha Formation in Oklahoma"(PDF).Circular Oklahoma Geological Survey.70:1–70.
  3. ^Reisz, R.R.; Laurin, M. (2004). "A reevaluation of the enigmatic Permian synapsidWatongia and of its stratigraphic significance".Canadian Journal of Earth Sciences.41 (4):377–386.doi:10.1139/e04-016.
  4. ^Maddin, H.C.; Evans, D.C.; Reisz, R.R. (2006). "An Early Permian varanodontine varanopid (Synapsida: Eupelycosauria) from the Richards Spur locality, Oklahoma".Journal of Vertebrate Paleontology.26 (4):957–966.JSTOR 4524646.
Tetrapodomorpha
Reptiliomorpha
Synapsida
    • see below↓
Caseasauria?
Eothyrididae
Caseidae
Varanopidae?
Mesenosaurinae
Varanodontinae
Metopophora
    • see below↓
Incertae sedis
Ennatosaurus tectonVaranodon agilis
Ophiacodontidae
Edaphosauridae
Palaeohatteriidae
Sphenacodontoidea
Sphenacodontidae
Therapsida
    • see below↓
Clepsydrops colletii

Gordodon kraineri

Secodontosaurus obtusidens
Biarmosuchia
Dinocephalia
Anomodontia
Gorgonopsia
Eutheriodontia
Therocephalia
Cynodontia
Incertae sedis
Raranimus dashankouensis
Varanodon agilis


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