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Dinosaur: Ugrosaurus olsoni
Cretaceous: 72.1–66 Ma
| Length*: | 8.6 m | 28.2 ft |
| Weight*: | 8.8 t | 19,401 lb |
*The largest known specimen
Period
Epoch: Late Cretaceous
Stage: Late Maastrichtian
Years: 72.1–66 Ma
Details
Status: S > Triceratops horridus
Author: CoBabe & Fastovsky
Year: 1987
Distribution
Area: North America
Country: USA
Region: Montana
Formation: Hell Creek
Sources
Material: Skull fragments and vertebral centrum.
References: Forster, C.A. (1993) "Taxonomic validity of the ceratopsid dinosaur Ugrosaurus olsoni (Cobabe and Fastovsky)".
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