Dinosaur: "Monoclonius" fissus
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: Incomplete pterygoid.
References: Dodson, P. (1990). On the status of the ceratopsids Monoclonius and Centrosaurus.
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