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: Chasmosaurus "priscus"
| Length*: | 4.7 m | 15.4 ft |
| Weight*: | 1.1 t | 2,425 lb |
*The largest known specimen
Period
Epoch: Late Cretaceous
Stage: Middle-Late Campanian
Years: 83.6–72.1 Ma
Details
Status: nomen nudum > Chasmosaurus russelli
Author: Longrich
Year: 2015
Distribution
Area: North America
Country: Canada
Region: Alberta
Formation: Dinosaur Park
Sources
Material: Skull and a large part of skeleton.
References: Fowler (2017) Revised geochronology, correlation, and dinosaur stratigraphic ranges of the Santonian-Maastrichtian (Late Cretaceous) formations of the Western Interior of North America (IN SUPPLEMENTARY MATERIAL).
