pelycosaur

noun
pel·​y·​co·​saur | \ ˈpe-li-kə-ˌsȯr How to pronounce pelycosaur (audio) \

Definition of pelycosaur

: any of an order (Pelycosauria) of extinct, primitive, synapsid vertebrates (such as dimetrodonchiefly of the Permian period often having extreme development of the dorsal vertebral processes and giving rise to the therapsids

First Known Use of pelycosaur

1884, in the meaning defined above

History and Etymology for pelycosaur

ultimately from Greek pelyc-, pelyx bowl + sauros lizard

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Dictionary Entries near pelycosaur

pelvisacral

pelvo-

pelvorenal

pelycosaur

Pelycosauria

Pemba

pembina

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The first known use of pelycosaur was in 1884

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Britannica.com: Encyclopedia article about pelycosaur

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