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but by comparison with other members of the group

swinging its tail like a formidable weapon

The remains of several individuals at different stages of development and similar conditions suggest that this species may have had some social interaction or that

Gorgosaurus libratus Protoceratops Within minutesGorgosaurus libratus is an extinct species of theropod dinosaur belonging to the family Tyrannosauridae, which lived during the Late Cretaceous period, approximately 77 to 75 million years ago (Campanian), in what is now North America. Its fossil remains have been found mainly in Canada, especially in the Dinosaur Park Formation, which has allowed a detailed understanding of its anatomy and ontogeny. Morphologically, Gorgosaurus libratus was a large