Dinosaur: Triceratops galeus
Cretaceous: 72.1–66 Ma
Period
Epoch: Late Cretaceous
Stage: Late Maastrichtian
Years: 72.1–66 Ma
Details
Status: nomen dubium
Author: Marsh
Year: 1889
Distribution
Area: North America
Country: USA
Region: Colorado
Formation: Arapahoe
Sources
Material: Nasal horn core and other fragments ?
References: Ostrom, J. H. & Wellnhofer, P. (1986) "The Munich specimen of Triceratops with a revision of the genus".
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