extinct flying reptile of the Jurassic and Cretaceous having a birdlike beak and membranous wings supported by the very long fourth digit of each forelimb.

• 生活在侏罗纪和白垩纪时期已经灭绝的能飞行的爬行动物，嘴形似鸟嘴，膜状的翅膀由每个前肢中非常长的脚趾支撑。