Dinosaur jaw section?

[Sergiorex]

Hello I saw this jaw section online for sale, I was wondering what it could be from, the seller listed as albertosaurus but I highly doubt that for many reasons. Anyways I wanted to know what dinosaur group it may have came from, I was thinking maybe ceratopsian or hadrosaur? It’s from Judith river, I also was wondering how (if possible) you tell the difference between a theropod and herbivore jaw section. Many thanks

[Troodon]

2 hours ago, Sergiorex said:

ceratopsian or hadrosaur?

Correct

[Sergiorex]

Ok, thanks alot