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plesiosaur |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Plesiosaur \Ple"si*o*saur\, n. (Paleon.) One of the Plesiosauria. From WordNet r 1.6 [wn]: plesiosaur n : extinct marine reptile with a small head on a long neck a short tail and four paddle-shaped limbs; of the Jurassic and Cretaceous [syn: {plesiosaurus}]
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