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pterosaur

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noun ptero·saur \ˈter-ə-ˌsȯr\

Definition of pterosaur

  1. :  any of an order (Pterosauria) of extinct flying reptiles existing from the Late Triassic throughout the Jurassic and most of the Cretaceous and having a featherless wing membrane extending from the side of the body along the arm to the end of the greatly elongated fourth digit




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