Dinosaur: "Monoclonius" sphenocerus
| Length*: | 5 m | 16.4 ft |
| Weight*: | 1.6 tons | 3,527 lb |
ESR: 0.5 / 4 (estimated size reliability)
Period
Epoch: Late Cretaceous
Stage: Middle-Late Campanian
Details
Status: nomen dubium
Autor: Cope
Year: 1889
Area: North America
Country: USA
Region: Montana
Formation: Judith River
Other
Material: Complete nasal with horncore, incomplete premaxilla.
References: Dodson, P. (1990). On the status of the ceratopsids Monoclonius and Centrosaurus.
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