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Sphenacodon

Sphenacodon is an extinct genus of synapsid that lived from about 300 to about 280 million years ago during the Late Carboniferous and Early Permian periods. Like the closely related Dimetrodon, Sphenacodon was a carnivorous member of the... Wikipedia
Rank: Species
Scientific name: Sphenacodon
Family: †Sphenacodontidae
Genus: †Sphenacodon; Marsh, 1878