When Did the Dimetrodon Go Extinct?

Dimetrodon appeared in the late Paleozoic Era, during the Permian period (about 280 million year ago), long before the dinosaurs evolved. Dimetrodon went extinct in the huge Permian extinction, 245 million years ago, which immediately preceded the Mesozoic Era.

How long did the Dimetrodon live on Earth?

Dimetrodon, (genus Dimetrodon), extinct relative of primitive mammals that is characterized by a large, upright, sail-like structure on its back. Dimetrodon lived from about 286 million to 270 million years ago, during the Permian Period, and fossils of the animal have been found in North America.

When did Dimetrodon die out?

Over a dozen species have been named since the genus was first erected in 1878. Dimetrodon is often mistaken for a dinosaur or as a contemporary of dinosaurs in popular culture, but it became extinct some 40 million years before the first appearance of dinosaurs.