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Pterosauria 翼龍目 翼龍目 Pterosauria n 1: extinct flying reptiles: pterosaurs [synonym: {Pterosauria}, {order Pterosauria}] Ornithosauria \Or*ni`tho*sau"ri*a\, prop. n. pl. [NL. See
{Ornitho-}, and {Sauria}.] (Paleon.) An order of extinct flying reptiles; -- called also {{Pterosauria}}. [1913 Webster] Pterosauria \Pter`o*sau"ri*a\, n. pl. [NL.] (Paleon.) An extinct order of flying reptiles of the Mesozoic age; the pterodactyls; -- called also {{Pterodactyli}}, and {{Ornithosauria}}. [1913 Webster] Note: The wings were formed, like those of bats, by a leathery expansion of the skin, principally supported by the greatly enlarged outer or " little" fingers of the hands. The American Cretaceous pterodactyls had no teeth. See {Pteranodontia}, and {Pterodactyl}. [1913 Webster]
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