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Dinosaur: Stygimoloch spinifer
| Length*: | 4.2 m | 13.8 ft |
| Weight*: | 330 kg | 728 lb |
*The largest known specimen
Period
Epoch: Late Cretaceous
Stage: Late Maastrichtian
Years: 72.1–66 Ma
Details
Status: S > Pachycephalosaurus wyomingensis
Author: Galton & Sues
Year: 1983
Distribution
Area: North America
Country: USA
Region: Montana, North Dakota, South Dakota, Wyoming
Formation: Hell Creek, Lance
Sources
Material: Probably at least 12 individuals (problematic, all material may belong to Pachycephalosaurus wyomingensis).
References: Sullivan, Robert M. (2006). "A taxonomic review of the Pachycephalosauridae (Dinosauria:Ornithischia)".
Evans, D.C., Schott, R.K., Larson, D.W., Brown, C.M. & Ryan, M.J. (2013) "The oldest North American pachycephalosaurid and the hidden diversity of small-bodied ornithischian dinosaurs" (supplement).
