n. Any of various extinct flying reptiles of the group Pterosauria, including the pterodactyls, of the Mesozoic Era, characterized by wings consisting of a membrane of skin extending from the side of the body to the very long fourth digit of the forelimb. [From New Latin Pterosauria, order name : Greek pteron, feather, wing; see -PTER + Greek sauros, lizard.] |
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