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Re: [dinosaur] Pits in the Jaw of Therapods



Indeed, they are (or likely are). Ruger Porter of Ohio University, has worked on these guys and found them to be the end paths of underlying blood vessels. Whether they were feeding tight skin or just lips remains to be seen, but they are definitely blood vessels.

Jason
 
http://reptilis.net "I am impressed by the fact that we know less about many modern [reptile] types than we do of many fossil groups." - Alfred S. Romer



From: Ruben Safir <ruben@mrbrklyn.com>
To: Dann Pigdon <dannj@alphalink.com.au>
Cc: dinosaur-l@usc.edu
Sent: Tuesday, March 14, 2017 6:28 PM
Subject: Re: [dinosaur] Pits in the Jaw of Therapods

On Wed, Mar 15, 2017 at 08:45:57AM +1100, Dann Pigdon wrote:
>
> On Sun, Mar 12th, 2017 at 9:35 AM, Ruben Safir <ruben@mrbrklyn.com> wrote:
>
> > I had the pleasure of being at the Royal Tyrrell Museum last week.  It
> > is a GREAT place, and not enough good things said about them and their work.
> >
> > I took a lot of pics and it seems that the Therapods all have these pits
> > in the upper and lower jaws, that almost suggest whiskers.
>
> They're more likely holes for blood vessels that supplied blood to 'lips' that partially covered the teeth.

Is that what they look like on a ct scan?  They have to have some
function.


>
> --
> _____________________________________________________________
>
>  Dann Pigdon
>  GIS Officer
>  Melbourne, Australia

> _____________________________________________________________

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