Pachycephalosaurus
Pachycephalosaurus was among the last and largest of the dome-headed dinosaurs, believed to have used their heads as battering rams.
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| Length | 8 m (26 ft) |
| Period | Late Cretaceous |
| Location | North America |

Pachycephalosaurus was among the last and largest of the dome-headed dinosaurs, believed to have used their heads as battering rams.
![]() |
|
| Length | 8 m (26 ft) |
| Period | Late Cretaceous |
| Location | North America |