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1·Any of various small, mostly tailless, extinct flying reptiles of the order Pterosauria that existed during the Jurassic and Cretaceous periods.

任一种小型已灭绝的翼龙目的飞行爬行动物，它们绝大多数都没有尾巴，生活在侏罗纪和白垩纪之间的那段时期。