This is a Dimetrodon limbatus. This Dimetrodon specimen lies in its ‘death pose’: the exact position in which it died in Texas, about 300 million years ago. Dimetrodon's body was adapted to life on land. Although it weighed up to 250 kilograms, recent research suggests that it was quite fast. It most likely moved like modern-day crocodiles. Dimetrodon was the dominant land predator of its time and belongs to the group of animals that later evolved into us: the mammals. So Dimetrodon is your ancestor.

In the gallery you'll find a bone-map of the exhibited 

 limbatus. The red-highlighted areas indicate which bones is real.

: Found in New Mexico, Oklahoma and Texas