plesiosaur definition

  • noun:
    • a big extinct marine reptile having paddlelike limbs which was typical in European countries and North America during the Mesozoic age.
    • Any of a few extinct marine reptiles, of purchase Plesiosauria, from the Jurassic and Cretaceous periods
    • among Plesiosauria.
    • An animal associated with order Plesiosauria.
    • extinct marine reptile with a little head on an extended neck a brief end and four paddle-shaped limbs; of Jurassic and Cretaceous

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