Pachyrhinosaurus (“thick-nosed reptile") is an ornithischian (bird-hipped) dinosaur from the Late Cretaceous time of North America. The first examples were exposed by Charles M. Sternberg in Alberta, Canada, in 1946, and named in 1950.

Pachycephalosaurus 1

Pachycephalosaurus 2

Pachycephalosaurus 3

Pachycephalosaurus 4