Pachycephalosauridae fossil vertebrae with processes
Specimen measures approx 7.25" x 2" x 1.5"
With stand measures 9.75" tall
Pachycephalosaurus is a genus of pachycephalosaurid dinosaurs. It lived during the Late Cretaceous Period of what is now North America. Remains have been excavated in Montana, South Dakota, Wyoming and Alberta.
Lived: 72.1 million years ago - 66 million years ago
Mass: 66 – 2,200 lbs
Length: 15 ft.
Higher classification: Pachycephalosauridae
Scientific name: Pachycephalosaurus (Thick-headed lizard)
Order: Ornithischian dinosaurs
Like other pachycephalosaurids, Pachycephalosaurus was a bipedal herbivore with an extremely thick skull roof. It possessed long hindlimbs and small forelimbs. Pachycephalosaurus is the largest-known pachycephalosaur. The thick skull domes of Pachycephalosaurus and related genera gave rise to the hypothesis that pachycephalosaurs used their skulls in intra-species combat. This hypothesis has been disputed in recent years.