Very Nice 2.3" Tyrannosaur Tooth - Montana

This is a 2.3" 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.

This tooth has weathered enamel, sharp serrations on the posterior edge with slightly dulled serrations on the anterior edge, and the tip of the tooth has some mild feeding wear. There are two crack repairs and minimal restoration to fill gaps left from the breaks and to fill missing areas to help stabilize the fossil.

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