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Re: Bigger dinosaurs had warmer blood.
On Fri, 14 Jul 2006, Dann Pigdon wrote:
Quoting "Richard W. Travsky" <email@example.com>:
And the first thing that came to mind for me was how DID they shed heat?
Maybe that's what those super-necks and -tails were for; to increase the
surface area:volume ratio to help cool down. Feeding adaptations and defense
may well have been secondary.
This sounds testable. Increased blood flow, as you suggest below...make
a model, pump warm water around, infrared imaging...?
What of the 'spikes' found on some diplodocid necks/tails? Could they have
had rich internal blood supplies to further the cooling process (something
similar has been suggested for stegosaur plates)? The frill on Amargasaurus
also comes to mind.