Cotylosaur Definition
kŏtl-ə-sôr
noun
Any of various large reptilelike extinct tetrapods of the Carboniferous and Permian Periods, traditionally placed in the order Cotylosauria.
American Heritage
Other Word Forms of Cotylosaur
Noun
Singular:
cotylosaur
Plural:
cotylosaursOrigin of Cotylosaur
Greek kotulē hollow object, socket Greek sauros lizard
From American Heritage Dictionary of the English Language, 5th Edition
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