Asian pachycephalosaurus
Answers
Pachycephalosaurus (/ˌpækɪˌsɛfələˈsɔːrəs/;[2] meaning "thick-headed lizard," from Greek pachys-/παχύς- "thick", kephale/κεφαλή "head" and sauros/σαῦρος "lizard") is a genus of pachycephalosaurid dinosaurs. The type species, P. wyomingensis, is the only known species. It lived during the Late Cretaceous Period (Maastrichtian stage) of what is now North America. Remains have been excavated in Montana, South Dakota, Wyoming and Alberta. It was a herbivorous creature which is primarily known from a single skull and a few extremely thick skull roofs, at 9 inches thick. More complete fossils have been found in recent years. Pachycephalosaurus was one of the last non-avian dinosaurs before the Cretaceous–Paleogene extinction event. Another dinosaur, Tylosteus of western North America, has been synonymized with Pachycephalosaurus, as have the genera Stygimoloch and Dracorex in recent studies.
Answer:
Some pachycephalosaurs lived in Asia, but Pachycephalosaurus roamed the North American West. Like all of its cousins, it was a plant eater that walked on its hind legs. Pachycephalosaurus was not as quick as its smaller relatives, but compared to the giant duckbills and horned dinosaurs in its world, it was quite speedy. And its eyes were set forward in its skull, giving pachycephalosaurs good 3-D vision.
Pachycephalosaurus is often shown butting heads with its rivals, like bighorn sheep do today. But scientists believe that it could not have survived banging heads. Instead, they suggest that these dinosaurs may have whacked each other in the sides with their thick heads. Why? Maybe it was competition for territory or mates...
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