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Re: Bigger dinosaurs had warmer blood.

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

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.

You have to wonder if maybe some sauropods didn't have a rather pronounced dewlap, ala zebu cattle. Would that leave a trace on the fossilized remains??