Re: Evolution of tyrannosauroid bite power

[Jamie Stearns <stearns5@cox.net>]

I'm not sure about when the strong bite power evolved,but I do seem to 
recall that Dilong and other early tyrannosaurs were mainly identified as 
such from their cranial anatomy, which would suggest that a distinctive 
skull was one of the first things to evolve, and this may have some bearing 
on when the jaw structure developed. However, I've yet to really look at the 
structure of Dilong's jaws or anything for evidence of its biting power.