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
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Origin of COTYLOSAUR

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

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