noun Etymology: ultimately from Greek pelyc-, pelyx bowl + sauros lizard Date: 1904 any of an order (Pelycosauria) of primitive chiefly Permian quadruped synapsid reptiles often having extreme development of the dorsal vertebral processes

New Collegiate Dictionary. 2001.

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  • Pelycosaur — Taxobox name = Pelycosaurs fossil range = Late Carboniferous Late Permian (non therapsid) image width = 250px image caption = Dimetrodon grandis skeleton at the National Museum of Natural History regnum = Animalia phylum = Chordata superclassis …   Wikipedia

  • pelycosaur — /pel i keuh sawr /, n. 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. [ < NL Pelycosauria (1878), equiv. to… …   Universalium

  • pelycosaur — [ pɛlɪkəsɔ:] noun a fossil reptile of the late Carboniferous and Permian periods, typically having a spiny sail like crest on the back. Origin early 20th cent.: from Gk pelux, peluk bowl + sauros lizard …   English new terms dictionary

  • pelycosaur — pel·y·co·saur …   English syllables

  • pelycosaur — noun large primitive reptile having a tall spinal sail; of the Permian or late Paleozoic in Europe and North America • Hypernyms: ↑synapsid, ↑synapsid reptile • Member Holonyms: ↑Pelycosauria, ↑order Pelycosauria …   Useful english dictionary

  • Synapsid — Synapsids Temporal range: Late Mississippian Early Cretaceous, 320–100 Ma …   Wikipedia

  • Anexo:Pelicosaurios — Esta lista de pelicosaurios es un intento de crear un listado comprensible de todos los géneros incluidos en este grupo. La lista incluye todos los géneros aceptados por la comunidad científica, pero también aquellos que hasta el momento se han… …   Wikipedia Español

  • Dimetrodon — Temporal range: Cisuralian Guadalupian …   Wikipedia

  • Eupelycosauria — Taxobox name = Eupelycosauria fossil range = Late Carboniferous to Late Permian (non mammalian) image width = 240px image caption = Edaphosaurus , a Eupelycosaurian regnum = Animalia phylum = Chordata classis = Synapsida ordo = Pelycosauria… …   Wikipedia

  • Evolution of mammals — Restoration of Thrinaxodon, a member of the cynodont group, which includes the ancestors of mammals Further information: Evolutionary history of life The evolution of mammals within the synapsid lineage (sometimes called mammal like reptiles )… …   Wikipedia

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