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therapsid

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therapsid

Main Entry:: the·rap·sid
Pronunciation:: \thə-ˈrap-səd\
Function:: noun
Etymology:: New Latin Therapsida, from ther- mammal (from Greek thēr wild animal) + apsid-, apsis arch, vault — more at fierce, apsis
Date:: 1912

: any of an order (Therapsida) of Permian and Triassic synapsid reptiles considered ancestors of the mammals

— therapsid adjective

Learn more about "therapsid" and related topics at Britannica.com

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