plesiosaurus
蛇頸龍
Ple·si·o·sau·rus n.; pl. Plesiosauri Paleon. A genus of large extinct marine reptiles, having a very long neck, a small head, and paddles for swimming. It lived in the Mesozoic age.
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plesiosaurus
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: plesiosaur]