Dictionary

cotylosaur

noun co·ty·lo·saur \ˈkä-tə-lō-ˌsr, kə-ˈti-lə-\

Definition of COTYLOSAUR

:  any of an order (Cotylosauria) of extinct primitive reptiles of the Carboniferous to Triassic with short legs and massive bodies that were probably the earliest truly terrestrial vertebrate animals

Origin of COTYLOSAUR

ultimately from Greek kotylē + sauros lizard
First Known Use: 1895

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