1.13" Nanotyrannus Tooth With Interesting Wear

This is a 1.13" long Tyrannosaur tooth of the genus Nanotyrannus lancensis from the Hell Creek Formation of Montana. It has good enamel preservation but what makes this tooth so interesting is the heavy occlusal wear on the proximal edge of the tooth. I'm not exactly sure what type of activity in the dinosaurs mouth would have caused this wear pattern. Comes in an acrylic case.

There is a hot debate among paleontologists about whether Nanotyrannus and Tyrannosaurus rex (T-Rex) are really the same species, with Nanotyrannus representing juveniles. Recent finds that are soon to be published should put this debate to rest, definitively proving that Nanotyrannus is in fact a separate genus and valid genus. Nano teeth tend to be much more finely serrated, and much thinner/blade like t-rex teeth, in addition to being smaller.