>>2321399>>2321400Tooth posting anon here, both of these guys know more than me and they appear to be correct. However I have heard that some Tyrannosaurids do have a dentary tooth that is near indistinguishable from premaxillary. I still label them as premax though.
>>2320937This is 100% an albertosaurus tooth based on where it was found. The skull might have been nearby, but I have found hundreds of Tyrannosaurid teeth but never a single jaw section or rooted tooth. The areas I can hunt are less fossiliferous than hell Creek, Drumheller, and the other famous areas, and I think it results in the weaker parts of the fossil being destroyed before the crown. Also most teeth are sheds anyway.