1.13" Partial Tyrannosaurid Tooth - Montana

This is a tooth from a Tyrannosaurid of the Two Medicine Formation (Judith River Group) of Montana. This specimen has smooth enamel, a nice tip, and serrations on both edges. The tooth was found in pieces and the parts that were discovered were pieced back together. There is a chunk missing from the posterior edge of the tooth and smaller slivers in two other locations.

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