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

ecologically comparable to a great egret

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

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

The postcranial body was compact

Gorgosaurus libratus Protoceratops One of the most notableGorgosaurus 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