[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: Re Warm-blooded debate



Mark Shelly wrote:
> 
>  The air passages can take the air flow around the smallish
> brain
> area.  Evaporative cooling would reduce the air temperature in head region
> and
> countercurrent blood flow would help isolate the head temperature from the
> rest of the body.  In addition, some evaporative cooling could take place
> in the
> neck air sacs helping reduce the temperature of the blood flowing to the
> head.
> Additional surface area found in nasal passage ways may have also
> contributed
> to evaporative cooling of the head.

This may be opening a can of worms, but what are the current thoughts
on dinosaurian respiratory turbinates? How does Rueben et al's work
affect some of the above mentioned theories on dinosaur cooling
methods? (ie. concervation of water v's panting, etc)
-- 
____________________________________________________

        Dann Pigdon
        Melbourne, Australia
        http://www.geocities.com/capecanaveral/4459/

____________________________________________________