que se extendió desde Alaska hasta el norte de México

Although it was thought to be a solitary animal

estrechamente relacionado con los iguanodóntidos

These legs gave it a bipedal stance

Unlike other theropods

Inostrancevia alexandri Anteosaurus que se extendió desde AlaskaInostrancevia 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