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Re: Bigger dinosaurs had warmer blood.
Quoting "Richard W. Travsky" <firstname.lastname@example.org>:
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.
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.
GIS / Archaeologist http://heretichides.soffiles.com
Melbourne, Australia http://www.geocities.com/dannsdinosaurs