Partial Tyrannosaur Tooth - Hell Creek Formation

This is a partial, .73" long Tyrannosaur tooth from the Hell Creek Formation of Carter County, Montana. It's the bottom half of a tooth and comes in an acrylic display 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.