Scientists discover 'prehistoric killing machine' was a speed demon - CNET

One of these animals, the big-jawed Anteosaurus, was thought to be sluggish, but new research shows it was likely a vicious and effective hunter.

The Wit University team created a 3D reconstruction of an Anteosaurus skull and discovered some surprising new data about its brain, body parts and likely hunting skills on land.

Said co-author Julien Benoit, "Even though Anteosaurus lived 200-million years before the famous dinosaur Tyrannosaurus rex, Anteosaurus was definitely not a 'primitive' creature, and was nothing short of a mighty prehistoric killing machine."