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Stegoceras was a small, plant-eating dinosaur that had a large, thick-skulled head. This dinosaur may have butted heads with others of its kind in bone-shaking contests.
ANATOMY
Stegoceras grew to be about 7 feet long (2.1 m) and 4 feet tall (1.2 m). This plant-eater weighed roughly 170 pounds (78 kg).
Stegoceras was a dome-headed, bipedal dinosaur. Its large head housed a thick skull, a relatively large brain, and large eyes. Its skull was about 3-4 inches (8 cm) thick. Males had thicker domes than females, and older Stegoceras had thicker domes than younger ones. Stegoceras had a fringe of horny knobs along the rear of its skull. It had short forelimbs and a large, stiff tail.
DIET
Stegoceras was an herbivore (a plant-eater, a primary consumer). It had small, curved teeth with serrated edges, a relatively large brain, and large eyes.
WHEN STEGOCERAS LIVED
Stegoceras lived during the late Cretaceous period, toward the end of the Mesozoic Era, the Age of Reptiles, about 76-65 million years ago. Among the contemporaries of Stegoceras were Albertosaurus and Maiasaura, Tyrannosaurus rex, Ankylosaurus (an armored herbivore), Parasaurolophus, Corythosaurus (a crested dinosaur), and Dryptosaurus (a meat-eating dinosaur).
STEGOCERAS ANCESTORS
Stegoceras, a Pachycephalosaur, probably evolved from Hypsilophodon, a small, agile, bipedal herbivore.
LOCOMOTION
Stegoceras walked on two legs, and was a relatively speedy dinosaur. It may have gone on all fours to forage for plants.
DISCOVERY OF FOSSILS
Stegoceras was first found and named in 1902 by Lawrence Lamb, the Canadian paleontologist, in 1889. Many Stegoceras and other pachycephalosaurid fossils have been found in Alberta, Canada, and Montana, USA. The type species is S. validum.
CLASSIFICATION
Stegoceras was an ornithischian dinosaur, the order of bird-hipped, herbivorous dinosaurs. It was a member of the group Marginocephalia, and the group Pachycephalosauria, thick-skulled, bipedal, herding herbivores (that included Pachycephalosaurus and others).
STEGOCERAS LINKS
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