Menacing 2.32" Tyrannosaur Tooth - Montana

This is a well preserved, 2.32" Tyrannosaurid tooth from the Two Medicine Formation (Judith River Group) of Montana. This formation is approximately 70 million years old, or about 5 million years old than the Hell Creek Formation which produces T-Rex.

There are three described Tyrannosaurs from the Two Medicine Formation (Judith River Group), Albertosaurus, Gorgosaurus and Daspletosaurus. Research done on teeth from these three Tyrannosaurs has concluded that isolated teeth are statistically impossible to assign to a specific genre because they are so similar. I've linked to the research paper below.

Morphometry of the teeth of western North American tyrannosaurids and its applicability to quantitative classification

This tooth is 2.32" long and has great enamel preservation. The serrations are bit worn but about 3/4 of them are still visible. There is an interesting wear facet near the tip where the tooth was rubbing against another tooth in the dinosaurs mouth. There is a gap fill running vertically down the center of the tooth on one side, but no other repairs.