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Re: Bigger dinosaurs had warmer blood.

Quoting "Richard W. Travsky" <rtravsky@uwyo.edu>:

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.


Dann Pigdon
GIS / Archaeologist         http://heretichides.soffiles.com
Melbourne, Australia        http://www.geocities.com/dannsdinosaurs