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plesiosauria |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: 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}. From WordNet r 1.6 [wn]: Plesiosauria n : any of the plesiosaurs [syn: {Plesiosauria}, {suborder Plesiosauria}]
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