Meaning Of The Word Pelycosaur

Real Dictionary

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Pelycosaur Meaning

Pelycosaur Definition
Pelycosaur Definition

What's The Definition Of Pelycosaur?

pelycosaur in American English
noun: any of a group of large primitive reptiles belonging to the extinct order Pelycosauria, abundant in North America and Europe during the Permian Period, often having a tall spinal sail

pelycosaur in British English
noun: any extinct mammal-like reptile of the order Pelycosauria, of Upper Carboniferous to Lower Permian times, from which the therapsids are thought to have evolved

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