pelycosaur definition

  • noun:
    • A large primitive reptile having a tall vertebral sail; of the Permian or late Paleozoic in European countries and the united states.
    • big primitive reptile having a tall spinal sail; of Permian or late Paleozoic in European countries and united states

Related Sources

  • Definition for "pelycosaur"
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    • Fossil fish in Romer Hall (with…
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  • Hypernym for "pelycosaur"
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