Dromeosaur or Tyrannosaur tooth?

[The_bro87]

Hello! I’ve had this tooth for a while now and always labeled it as nannotyrannus, since that’s what I bought it as. It’s about .8” long, supposed to be from the Hell Creek formation but no other locality was listed, so I understand an ID might not be 100%. I was just wondering broadly if it was a tryannosaur or dromeosaur tooth. At first I thought tyrannosaur because it’s kind of thick for its size and has large serrations. It also looks like it has “pinching” on only the right side in the base picture which made me think it was a nanno tooth specifically. Then I saw a picture posted on the forum of a similar sized tooth with the same profile listed as dromeosaur. Any help would be appreciated thanks! 

[Troodon]

I think your initial ID was probably correct.  Dromaeosaurid teeth would be significantly more compressed.  Nice tooth.  Not having a locality is a major issue definitively ID it.

[The_bro87]

Thank you!