Can anyone identify the exact species for the tyrannosaur tooth fragment?

[Macrophyseter]

I bought this partial .72" Tyrannosaur tooth that was found in the Two Medicine Formation in Montana, dated about 70 million years old. The seller decided it could be either a Gorgosaurus, Albertosaurus, or Daspletosaurus, but couldn't find out. So I was wondering, do you know the exact species for this tooth? Thanks.

[Runner64]

Close to impossible to say which tyrannosaur it's from. It's from one of the three you listed, that's for sure. If I were you, I would label it as just a tyrannosaur tooth from two medicine formation. It's a nice tooth, enjoy!

[Troodon]

Unfortunately studies have shown that there are no characteristics to consistently differentiate between the three Tyrannosaurs in the Two Medicine Formation for teeth under 3 inches. The same is true for teeth from the Judith River Formation in Montana and those from Canadian deposits.

Edit:

http://www.thefossilforum.com/index.php?/topic/57316-can-you-identify-tyrannosaur-teeth-from-north-america/

Like Runner64 said the ID for this type of tooth should simply be Tyrannosaur more specifically Tyrannosaurid indet.

Edited December 24, 2015 by Troodon

[Macrophyseter]

oh wow, thanks for the advice