Description
Pachycephalosaurus Dinosaur
- Pachycephalosaurus wyomingensis (**Stygimoloch?)
- Cretaceous Age
- Hell Creek Formation
- Harding County, South Dakota
- Specimen measures approx. 4.0mm wide and will come in a 1.25″ gem jar. The SMALL size of these teeth suggest they could be from the smaller Stygimoloch dinosaur, but most likely from a Juvenile Pachycephalosaurus.
- MORE Dinosaur Teeth for Sale
Pachycephalosaurus is a genus of pachycephalosaurid dinosaurs. The type species, P. wyomingensis, is the only known species, but some researchers argue that there might be a second species, P. spinifer.
Like other pachycephalosaurids, Pachycephalosaurus was a bipedal herbivore with an extremely thick skull roof. It possessed long hindlimbs and small forelimbs.
It 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.
**Stygimoloch is a controversial genus of Pachycephalosaurid due to two studies in 2009 and 2016 which argued that both Dracorex and Stygimoloch were actually immature forms of Pachycephalosaurus as well as a corroborative 2010 study which suggested that all flat-headed Pachycephalosaurids were juveniles of dome-headed adults.
