Pelycosaur

noun

Definitions

Noun
  1. 1
    Any of a group of basal or primitive Late Paleozoic synapsid amniotes, part of a polyphyletic grade, formerly regarded as order Pelycosauria.
  2. 2
    large primitive reptile having a tall spinal sail; of the Permian or late Paleozoic in Europe and North America wordnet

Etymology

Ancient Greek πέλυξ (pélux, “bowl, axe”) and σαῦρος (saûros, “lizard”).

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