Re: Dino-lips (was Re: Poison thero-teeth?)

[Christopher Srnka <theclaw10@home.com>]

Jordan Mallon wrote:

> >From: "aspidel" <aspidel@infonie.be>
>
>
> I think I should also add to this discussion Tracy Ford's obseration that a
> number of tyrannosaurids ("Stan" the _T. rex_ and what some consider to be
> _Nanotyrannus_) had maxillary teeth that would have been much too long to
> have been covered by the lips from the lower jaw.  In fact, in "Stan's"
> case, the maxially teeth protrude past the bottom of the mandible, thus
> making any type of tooth-covering lip highly dubious, at best.
> That said, along with phylogenetic bracketing, I seriously doubt any
> theropods had lips.
>
>

I was under the impression that Stan's teeth are protruding unnaturally because
of some kind of pathology; why do other _T.rex_ specimens not exhibit the same
amount of protrusion?