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Plesiosauroidea

Plesiosauroidea (plesiosaurs) Suborder of aquatic reptiles which enter the fossil record in the late Triassic, and which are common in many Jurassic and Cretaceous sediments. In appearance they were likened by Buckland to ‘a snake strung through the body of a turtle’, and some grew up to 15 m in length. There were also short-necked types, as well as the swannecked. The former are defined as the superfamily Plesiosauroidea (e.g. Plesiosaurus and Muraenosaurus), the latter as the superfamily Pliosauroidea (e.g. Pliosaurus and Trinacromerum), the two superfamilies making up the suborder.

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plesiosaurus

plesiosaurus one of a genus of extinct marine reptiles. XIX. f. Gr. plēsíos near + saúros lizard.

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Plesiosauroidea

Plesiosauroidea See PLESIOSAURIA.

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plesiosaurs

plesiosaurs See PLESIOSAUROIDEA.

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plesiosaurs

plesiosaurs See PLESIOSAURIA.

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