 plesiosaurus |
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| 1. | [ noun ] (zoology) extinct marine reptile with a small head on a long neck a short tail and four paddle-shaped limbs; of the Jurassic and Cretaceous | |
| Synonyms: | plesiosaur | |
| Related terms: | archosaur genus_Plesiosaurus | |
| Similar spelling: |
plesiosaur Plesiosauria |
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