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Cotylorhynchus

Animal
Cotylorhynchus is an extinct genus of herbivorous caseid synapsids that lived during the late Lower Permian and possibly the early Middle Permian in what is now Texas and Oklahoma in the United States. The large number of specimens found make it... Wikipedia
Length: 9.8 ft. (Adult)
Scientific name: Cotylorhynchus (Cup snout)
Lived: 279.3 million years ago - 265.1 million years ago (Kungurian - Wordian)
Family: †Caseidae