Although it was thought to be a solitary animal

such as small reptiles

que se extendió desde Alaska hasta el norte de México

resting and basking on the rocks

It was described in 2012 from fragmentary fossil remains

Inostrancevia alexandri Anteosaurus Although it was thought toInostrancevia alexandri, an extinct species of gorgonopsid therapsid that inhabited Earth during the Permian period, approximately 270 to 260 million years ago. It was a large predator that ranked high in the food chain of its ecosystem. This therapsid belonged to the group of gorgonopsids, a family of carnivores that were characterized by their developed fangs and their appearance similar to that of reptiles, although they were more closely related