pelycosaur

noun
pel·​y·​co·​saur | \ˈpe-li-kə-ˌsȯr \

Definition of pelycosaur 

: any of an order (Pelycosauria) of primitive chiefly Permian quadruped synapsid reptiles often having extreme development of the dorsal vertebral processes

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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