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RE: Sauropod nostrils (was RE: joke........)
On Monday, August 30, 1999 9:36 AM, carlo godel [SMTP:firstname.lastname@example.org] wrote:
> In all of the animals you mention the internal nares still come very close to
> the braincase especially in the Camarasaurus, the others I can not say as I
> don't have any specimens of those available for study. I may be misinformed
> I remember reading that some frogs are capable of respiration through the
> My Idea is not that far fetched, perhaps out on a limb? I did not bring a
> thank you
Frogs have glandular skin, like mammals -- some very small mammals also do some
respiration through the skin, I understand. Reptile epidermis is essentially
impermeable. Inside the air passage may be a somewhat different matter, but
recall that any gas exchange surface will also be a surface for evaporation.
Finally, blood supply does a lot for brains besides supply oxygen: cleans out
metabolic wastes, receives and delivers important hormonal signals, etc.