Every month, 100,000 readers use the Dinosaur Database, but we receive no support from you. Developing and updating the database requires a lot of work. Therefore, as of September 1, 2025, the database will be closed. If you want it to remain open and be updated, please support us via the "Buy us a coffee" button available on every page.
Dinosaur: Pentaceratops aquilonius
| Length*: | 4 m | 13.1 ft |
| Weight*: | 1.2 t | 2,646 lb |
*The largest known specimen
Period
Epoch: Late Cretaceous
Stage: Campanian
Years: 83.6–72.1 Ma
Details
Status: nomen dubium
Author: Longrich
Year: 2014
Distribution
Area: North America
Country: Canada, USA
Region: Alberta, Colorado
Formation: Dinosaur Park, Williams Fork
Sources
Material: Skull fragments, referred partial skull (this skull may belong to Pentaceratops sternbergii) ?
References: Longrich, N. R. (2014). The horned dinosaurs Pentaceratops and Kosmoceratops from the upper Campanian of Alberta and implications for dinosaur biogeography.
