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Re: nice cover painting - Re: NEW BOOK: Dinosaurs of Eastern Iberia

As elitist as this is going to sound, "mouth breathing" is a distinctly 
mammalian thing. Reptiles and birds both breathe almost entirely through the 
nose, even when they are going full out.



"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

----- Original Message -----
> From: Mike Keesey <keesey@gmail.com>
> To: dinosaur@usc.edu
> Cc: 
> Sent: Wednesday, 19 October 2011 10:18 PM
> Subject: Re: nice cover painting - Re: NEW BOOK: Dinosaurs of Eastern Iberia
> On Wed, Oct 19, 2011 at 6:47 PM, Augusto Haro <augustoharo@gmail.com> 
> wrote:
>>  Canids commonly trot with open mouths, so other animals making use of
>>  high cursing velocity and aerobic metabolism, as dinosaurs are
>>  currently considered, may behave similarly. Overall, that seems to be
>>  the case in canids when pursuing prey, moment at which oxygen uptake
>>  may increase. That in addition to panting, which may be common in
>>  active cursors.
> Or, a little closer to home, phylogenetically speaking:
> http://images.letsbuyit.co.uk/original/30/40/two-male-ostriches-running-during-dispute-etosha-national-park-namibia-photographic-print-23-x-30-5744030.jpeg
> (Granted, most pics of ostriches running show them with mouths closed.)
> -- 
> T. Michael Keesey
> http://tmkeesey.net/