Re: Evolution of tyrannosauroid bite power

[ptnorton <ptnorton@suscom-maine.net>]

> Because there wasn't much selective pressure acting on them?

"Much" is a relative term too, although I agree that the jaws (and neck) and 
hips were probably playing a much larger role in prey/carcass acquisition in 
T. rex than were the arms. Relative to the animal, and the probable size of 
its prey, T. rex arms were small and weak.

> T. rex was pretty clearly using some combination of legs and bite to
> capture prey.  The arms were not centrally involved.  (Or if they were
> involved, it was in a way -- position sensors for a 'grappled' prey
> animal, say -- that didn't select for strength.)

I agree.

PTJN