Pelycosaurs Animal Pictures

© Kim Alaniz, CC BY 2.0, via Wikimedia Commons – License / Original

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pelycosaur skeleton

pelycosaur skeleton — © Kim Alaniz, CC BY 2.0, via Wikimedia Commons — License (Original)

pelycosaur skeleton

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 Pelycosaur

Pelycosaur — © Pearson Scott Foresman, Public domain, via Wikimedia Commons — License (Original)

Pelycosaur