pterosaur

pterosaur

[ter-uh-sawr]
noun
any flying reptile of the extinct order Pterosauria, from the Jurassic and Cretaceous periods, having the outside digit of the forelimb greatly elongated and supporting a wing membrane.

Origin:
1860–65; < Neo-Latin Pterosauria; see ptero-, -saur

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World English Dictionary
pterosaur (ˈtɛrəˌsɔː)
 
n
dinosaur Compare plesiosaur any extinct flying reptile of the order Pterosauria, of Jurassic and Cretaceous times: included the pterodactyls

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
pterosaur   (těr'ə-sôr')  Pronunciation Key 
Any of various extinct flying reptiles of the Jurassic and Cretaceous Periods with wings consisting of a flap of skin supported by an elongated fourth digit on each forelimb (rather than an elongated second digit as in birds). Some pterosaurs were unique among reptiles in being covered with hair. Pterosaurs had wingspans ranging from less than 0.3 m (1 ft) to close to 15.2 m (50 ft).
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