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SOME VERTEBRATE AMPHIBIANS FOUND IN OKLAHOMA
Eryops megacephalus
Eryops was a massive labyrinthodont ("maze toothed") amphibian reaching two meters in length.
Grant County, Garber Formation, Early Permian
Noble County, Wellington Formation, Early Permian
Anthracosauria
A member of a small group of long-bodied Labyrinthodont amphibians, so named because of the labyrinthine folds of the tooth enamel in cross section. These large eel-like predators flourished during the lower Carboniferous to the Permian, but never survived the Permian mass extinctions.
Kay County, Wellington Formation, Permian