pachycephalosaurus
/ˌpækɪˌsɛfələˈsɔrəs/
noun
- A large, plant-eating dinosaur from the Late Cretaceous period, famous for its extremely thick, bony skull dome and short, spiky snout.
- Scientists think the pachycephalosaurus used its thick skull for protection and competition.
- The pachycephalosaurus is often shown in movies head-butting other dinosaurs with its massive dome.
- A complete skeleton of a pachycephalosaurus is on display at the natural history museum.