A theropod dinosaur tooth from the Hell Creek Formation. This tooth mostly like came from a Nanotyrannus as it has some chisel shaped serrations, but as the serrations are worn away on the mesial carina it's impossible to say for sure. Either way, it's a nice little theropod tooth. Comes labelled and stored in an acrylic case with padding.
65 million years (Cretaceous)
Powder River County, Montana, Hell Creek Formation