1.89" Tyrannosaur Tooth - Montana

 
 
This is a robust, 1.89" Tyrannosaur tooth from the Two Medicine Formation (Judith River Group) of Montana. This formation is approximately 70 million years old, or about 5 million years old than the Hell Creek Formation which produces T-Rex.

This large tooth has good enamel preservation. The serrations are worn, though most on the inner edge are still visible. The tooth is very thick in cross-section so it would have come from near the front of the jaw. There is one repaired crack, with small gap fill about 1/3 of the way from the tip, and gap fill in the base of the tooth.

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
DETAILS
SPECIES
Albertosaurus, Gorgosaurus or Daspletosaurus
LOCATION
North Central Montana
FORMATION
Two Medicine Formation, Judith River Group
SIZE
1.89" long
CATEGORY
SUB CATEGORY
ITEM
#36376
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