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 or via the Support page.
Dinosaur: Claosaurus agilis
Cretaceous: 86.3–72.1 Ma
| Length*: | 5 m | 16.4 ft |
| Weight*: | 700 kg | 1,543 lb |
*The largest known specimen
Period
Epoch: Late Cretaceous
Stage: Middle Santonian-Early Campanian
Years: 86.3–72.1 Ma
Details
Status: valid
Author: Marsh
Year: 1890
Distribution
Area: North America
Country: USA
Region: Kansas
Formation: Niobrara
Locations
Sources
Material: Partial skeleton with skull fragments.
References: Lull, R.S. i Wrigh, N.E. (1942) "Hadrosaurian dinosaurs of North America".
________________________
