Reptilia - Testudines - Toxochelyidae

Full reference: R. Zangerl. 1953. The vertebrate fauna of the Selma Formation of Alabama. Part IV. The turtles of the family Toxochelyidae. Fieldiana: Geology Memoirs 3(4):145-277

Parent taxon: Lophochelyinae according to D. Baird and G. R. Case 1966

Sister taxa: Ctenochelys, Lophochelys, Neurochelys, Oertelia, Peritresius

Subtaxa: Prionochelys galeotergum, Prionochelys matutina, Prionochelys nauta

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Type: Prionochelys nauta

Ecology: aquatic omnivore