Hadrosaur tooth variation?

[Alex Eve]

Howdy all

 

I’m wondering if there is any variation in the teeth between different hadrosaur species? In the guide to common vertebrate fossils of Alberta there is a diagram that portrays a supposed Corythosaurus tooth and that some other tooth diagrams do not represent Corythosaurus. There’s a bit of a difference between the diagrams, but I’m unsure if it warrants identification to a genus level.

 

 I took a look at my hadrosaur teeth and noticed there is a difference between these two. The one on the right is wider and has a more prominent central carina. Could this be taxonomic variation, or is it just individual variation? Any help is appreciated, thanks.