Pachycephalosaurus Enamel Pin (Pachycephalosaurus wyomingensis) Southern Giraffe Carefully encased in a clear

Carefully encased in a clear

The patella

with a more varied diet that includes leaves

the teeth of an animal are replaced at a certain age in order to accommodate larger meals

Native to the Andes Mountains of South America

Pachycephalosaurus Enamel Pin (Pachycephalosaurus wyomingensis) Southern Giraffe Carefully encased in a clearWith a name that literally means thick headed lizard, Pachycephalosaurus is famous for the bowling ball dome on its skullup to 25 cm of solid bone. Living in Late Cretaceous North America about 70 million years ago, this herbivore reached up to 4. 5 meters long and probably used its reinforced noggin for shoving matches, intimidation displays, or simply walking around looking perpetually unamused. While scientists debate whether they butted heads like