order Pelycosauria

Thesaurus

Noun

1.order Pelycosauria - edaphosaurus; dimetrodon Pelycosauriaanimal order - the order of animalssubclass Synapsida, Synapsida - extinct reptiles of the Permian to Jurassic considered ancestral to mammalspelycosaur - large primitive reptile having a tall spinal sail; of the Permian or late Paleozoic in Europe and North AmericaEdaphosauridae, family Edaphosauridae - a family of reptiles of the order Pelycosauriagenus Dimetrodon - a reptile genus of Pelycosauria