Struthiomimus, skull

Struthiomimus (meaning "ostrich mimic", is a genus of ornithomimid dinosaurs from the late Cretaceous of North America. Ornithomimids were long-legged, bipedal, ostrich-like dinosaurs with toothless beaks. The type species, Struthiomimus altus, is one of the more common small dinosaurs found in Dinosaur Provincial Park in Alberta, Canada. Its abundance suggests that these animals were herbivores or omnivores rather than pure carnivores. The size of S. altus is estimated at about 4.3 meters (14 feet) long and 1.4 meters (4.6 feet) tall at the hips, with a weight of around 150 kilograms (330 pounds). Struthiomimus had a build and skeletal structure typical of ornithomimids, differing from closely related genera like Ornithomimus and Gallimimus in proportions and anatomical details. As with other ornithomimids, they had small slender heads on long necks (which made up about 40% of the length of the body in front of the hips). Their eyes were large and their jaws were toothless. Their ver