Definition of "edaphosaurus" []

• Any of several dinosaurs of the family Edaphosauridae, from the Carboniferous and Permian periods, that had a distinctive dorsal sail or crest (noun)

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• "What was the song played on the Cher montage on Ellen Degenerass when Cher came to the show? in walking with beasts did petrolacasaurus evolve into edaphosaurus and dimetrodon?"