Nannotyrannus or T.rex tooth?

[The_bro87]

Hello! Just got this tooth in the mail. It’s from the Hell creek formation in Garfield county Montana. It’s 1.3” long.  It was listed as a Nanotyrannus tooth but I think it’s a T. rex tooth based on the shape of the base and thickness but wanted other opinions. I also thought this tooth was interesting looking due to the way the serrations are oriented on it, and was wondering what that might say about jaw position? Thanks! 

[rocket]

cross section is "more" a rex

[hadrosauridae]

I would call that "rex" all day.  Hopefully you got it for a nano price, since those dont carry the same valuation as rex does.

[Brevicollis]

Appears like a good rex canditate to me !

The base shape and thickness of the tooth by its sice absolutely dont match with nano, and the serrations are rather rough instead of fine like on nano.

Thats why I think its Rex.

 

Congratulations !

[The_bro87]

Thank you all very much! I’ll label it as Rex in my collection.