PTEROSAUR

Pterosaur

Pterosaurs were flying reptiles of the clade or order Pterosauria. They existed from the late Triassic to the end of the Cretaceous Period . Pterosaurs are the earliest vertebrates known to have evolved powered flight. Their wings were formed by a membrane of skin, muscle, and other tissues stretching from the ankles to a dramatically lengthened fourth finger. Early species had long, fully toothed jaws and long tails, while later forms had a highly reduced tail, and some lacked teeth. Many sported furry coats made up of hair-like filaments known as pycnofibres, which covered their bodies and parts of their wings. Pterosaurs spanned a wide range of ...

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pterosaur

Noun

  1. any of several extinct flying reptiles, of the order Pterosauria, including the pterodactyls


The above text is a snippet from Wiktionary: pterosaur
and as such is available under the Creative Commons Attribution/Share-Alike License.

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