Dimetrodon, skull & jaws Compsognathus The carapace

The carapace

5 to 3 meters long

6 million years

It has been suggested that Spinosaurus ate fish because of it's crocodile-shaped skull

Exactly how it lived and what it ate are still open to speculation

Dimetrodon, skull & jaws Compsognathus The carapaceDimetrodon (meaning two measure teeth) was a sail backed, meat eating animal that lived during the Permian Period, roughly 280 MYA years ago, before the dinosaurs evolved. It was a so called mammal like reptile, a pelycosaur; pelycosaurs were the ancestors of the mammals. Dimetrodon was a dominant carnivore during the Permian period, living mainly in swampy areas. Unlike their fellow non finned pelycosaurs, they warmed up early after sunrise, and