Nice 1.61" Nanotyrannus Tooth - Montana

This is a 1.61" long Tyrannosaur tooth likely of the species Nanotyrannus lancensis from the Hell Creek Formation of Montana. The tooth has nice, dark colored enamel and was collected from a private ranch in Powder River County, Montana. Most of the serrations are worn, but a small area of serrations on the posterior carina area are present near the tip. No repair or restoration.

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.