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Dinosaur: Sphaerotholus buchholtzae
| Length*: | 1.8 m | 5.9 ft |
| Weight*: | 30 kg | 66 lb |
*The largest known specimen
Period
Epoch: Late Cretaceous
Stage: Late Maastrichtian
Years: 72.1–66 Ma
Details
Status: valid
Author: Williamson & Carr
Year: 2002
Distribution
Area: North America
Country: USA, Canada
Region: Montana, North Dakota, South Dakota, Saskatchewan
Formation: Hell Creek, Frenchman
Locations
Sources
Material: Partial skull. Referred more than 20 individuals.
References: Williamson, T. E., & Carr, T. D. (2002). A new genus of derived pachycephalosaurian from western North America.
Mallon, J. C., Evans, D. C., Tokaryk, T. T., & Currie, M. L. (2015). First pachycephalosaurid (Dinosauria: Ornithischia) from the Frenchman Formation (upper Maastrichtian) of Saskatchewan, Canada.
D. Cary Woodruff, Mark B. Goodwin, Tyler R. Lyson & David C. Evans (2021). Ontogeny and variation of the pachycephalosaurine dinosaur Sphaerotholus buchholtzae, and its systematics within the genus.
