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Meaning of therapsid

the•rap•sid

Pronunciation: (thu-rap'sid), [key]
— n.
  1. any of various groups of mammallike reptiles of the extinct order Therapsida, inhabiting all continents from mid-Permian to late Triassic times, some of which were probably warm-blooded and directly ancestral to mammals.
—adj.
  1. of or pertaining to the Therapsida.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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