Pelycosaur meaning

pĕlĭ-kə-sôr
Any of various extinct, chiefly carnivorous synapsids of the Carboniferous and Permian Periods, including the dimetrodon and other species with saillike structures along the back.
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Origin of pelycosaur

  • New Latin Pelycosauria name of the former suborder in which the various pelycosaurs were classified Greek pelux, peluk- bowl, cup (from the typical shape of the ischium) Greek sauros lizard

    From American Heritage Dictionary of the English Language, 5th Edition