Is there actually any means of distinguishing Brachychampsa and Borealosuchus teeth, particularly those from the Hell Creek Formation? Insofar as I can see Brachychampsa teeth tend to more globular than those of Borealosuchus, but I have noticed that some Brachychampsa teeth, particularly those closer to the back of the jaw, can be quite elongate, so is there an identifying feature besides shape?