Dimetrodon was not a dinosaur

Approximate measurements of the Dunkleosteus:

strong legs that allowed it to move with agility

Its robust body and strong legs indicate that it was a quadruped dinosaur

Guanlong wucaii Torosaurus Dimetrodon was not a dinosaurGuanlong wucaii was a carnivorous dinosaur that lived during the Late Jurassic period, approximately 156 million years ago, in the Oxfordian, in what is now Asia. This dinosaur is notable for being one of the first known members of the tyrannosauroid group, the precursors of the famous Tyrannosaurus rex. In terms of size, the Guanlong wucaii was relatively small compared to its better known descendants. Fossils indicate that it reached a length of