plesiosaur

• 一种生存于侏罗纪和白垩纪的已灭绝海洋爬行动物，特征是头小、颈长、尾短，并有四个桨状鳍肢。

An extinct marine reptile from the Jurassic and Cretaceous periods, characterized by a small head, a long neck, a short tail, and four paddle-shaped limbs.

1. C1formalscientific

   An extinct marine reptile from the Mesozoic era, characterized by a small head, a very long neck, a short tail, and four large flippers used for swimming.

   蛇颈龙

   • The plesiosaur is often depicted as a long-necked creature that swam in ancient seas.
   • Fossils of a plesiosaur were discovered in the cliffs along the Jurassic Coast.
   • Unlike dinosaurs, the plesiosaur was a marine reptile that lived in the ocean.

   同义词plesiosaurus