Heavy-bodied reptile with a dorsal sail or crest

• Of the late Paleozoic

Wiktionary Word definitions in Wiktionary
n. any of several dinosaurs of the family Edaphosauridae, from the Carboniferous and Permian periods, that had a distinctive dorsal sail or crest

Wikipedia Word definitions in Wikipedia
Edaphosaurus (}; meaning "pavement lizard" for dense clusters of teeth) is a genus of extinct edaphosaurid synapsid that lived around 300 to 280 million years ago , during the late Carboniferous to early Permian periods . The American paleontologist Edward ...

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
edaphosaurus \edaphosaurus\ n. an extinct heavy-bodied reptile of the late Paleozoic having a dorsal sail or crest.

WordNet Word definitions in WordNet
n. heavy-bodied reptile with a dorsal sail or crest; of the late Paleozoic