plesiosauria

Noun
Synonyms: Plesiosauriasuborder Plesiosauria

WordNet 3.0

Noun (1)

  1. any of the plesiosaursSynonyms: Plesiosauriasuborder Plesiosauria
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Webster's Dictionary (GCIDE)

Plesiosauria \Ple`si*o*sau"ri*a\, n. pl. [NL. See Plesiosaurus.] (Paleon.) An extinct order of Mesozoic marine reptiles including the genera Plesiosaurus, and allied forms; -- called also Sauropterygia. [1913 Webster]
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