Dinosaur: Aublysodon cristatus
Cretaceous: 72.1–66 Ma
Period
Epoch: Late Cretaceous
Stage: Late Maastrichtian
Years: 72.1–66 Ma
Details
Status: S > Tyrannosaurus rex
Author: Marsh
Year: 1892
Distribution
Area: North America
Country: USA
Region: Wyoming
Formation: Lance
Sources
Material: Premaxillary tooth.
References: Marsh, (1892). Notes on Mesozoic vertebrate fossils. American Journal of Science.
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