Wonderful 1.25" Tyrannosaur Tooth - Montana

This is a well preserved 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 1.25" long and has great enamel and very nice serrations. There is one small chip in the outer edge, but this is likely something that happened while the animal was still alive. There are some interesting wear facets on one side at the tip where the tooth was rubbing up against another tooth in the dinosaurs mouth. No repair or restoration.