Pelycosauria

plural noun

Pel·​y·​co·​sau·​ria

: an order of primitive Permian reptiles (subclass Synapsida) that resemble mammals and often have extreme development of the dorsal vertebral processes compare dimetrodon, edaphosaurus

pelycosaurian

¦⸗⸗⸗¦sȯrēən

adjective or noun

Word History

Etymology

New Latin, from pelyco- (from Greek pelyk-, pelyx wooden bowl) + -sauria

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