Anapsida

plural noun

An·​ap·​si·​da

-sədə

: a subclass of Reptilia comprising primitive forms in which the skull lacks temporal openings and including chiefly Permian forms with the turtles as its only present representatives

Word History

Etymology

New Latin, from an- + -apsida (from Greek apsid-, apsis loop, arch)

First Known Use

1917, in the meaning defined above

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