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Re: Question: Why did birds lose their teeth?

On Mar 10, 2014, at 4:53 PM, Dann Pigdon <dannj@alphalink.com.au> wrote:

> Many non-volant toothed theropods also had long necks and short forelimbs, 
> making any sort of 
> grooming of the mouth via the forelimbs unlikely (tyrannosaurs and 
> carnotaurus are obvious 
> examples).

In fact, the vast majority of non-avian theropods could not reach their own 
mouths with their forelimbs, even those with relatively “robust” forelimbs, 
such as allosauroids (nor can they reach any area in front of themselves that 
they could see - which makes use in predation potentially cumbersome). 
Interestingly enough, among theropods, some living birds are among the derived 
taxa that can reach their mouths: with their hind limbs.