Serrated, .9" Fossil Tyrannosaur Tooth - Hell Creek Formation, Montana

This is a .9" long Tyrannosaur tooth, likely of the species Nanotyrannus lancensis, from the Hell Creek Formation in Montana. The enamel preserved beautifully, as well as the serrations along the posterior edge of the tooth. There is some interesting feeding wear to the tip.

An acrylic display case will accompany your purchase.

There is a very contentious debate among paleontologists about whether Nanotyrannus and Tyrannosaurus rex (T-Rex) are really the same species, with Nanotyrannus representing juveniles. Papers going back on forth on the topic continue to be published and there is a lot of fossil evidence under study which has yet to be published. We tend to fall into the camp that Nanotyrannus is in fact a separate species.

Nano teeth tend to be much more finely serrated, and much thinner/blade like t-rex teeth, in addition to being smaller. Though given the state of the debate labeling them as juvenile t-rex teeth would be just as valid.

Because of its age and sedimentary composition, the Hell Creek Formation has become one of the most paleontologically studied areas in the world. 158 genera of animals and 64 genera of plants are known from the formation and new discoveries are made frequently. In addition to Tyrannosaurs, Ceratopsids, and Hadrosaurs, the formation has yielded remains of amphibians, reptiles, lizards, snakes and turtles, fish and sharks, avian and non-avian dinosaurs, and mammals. The Hell Creek Formation gives the most complete understanding of the environment just before the Cretaceous-Paleogene extinction.

Nanotyrannus lancensis?
Dawson County, Montana
Hell Creek Formation
.9" long (straightline)
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