but by comparison with other members of the group

One of the most notable features is the presence of pneumatics not only in vertebrae and ribs

with an approximate weight of 80 to 100 kg in its adult stage

ecologically comparable to a great egret

The parietosquamosal frill is relatively short compared to chasmosaurine ceratopsids but displays complex ornamentation with developed epoccipitals

Gorgosaurus libratus Protoceratops but by comparison with otherGorgosaurus 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