particularly in the Alberta region of Canada

Medidas aproximadas del Edmontosaurus:

Su cráneo medía hasta 1

in what is now China

Its head was particularly striking

Sphenacodon ferox skeleton particularly in the Alberta regionSphenacodon ferox : A primitive predator on the path of mammals During the Early Permian, some 300 million years ago, terrestrial ecosystems were dominated by a diverse and constantly evolving fauna. Among the most prominent predators of that time was Sphenacodon ferox , a carnivorous synapsid that inhabited the regions that now constitute the southwestern United States. This animal, although extinct for hundreds of millions of years, represents a key