>For both reasons (heat loss and heat gain), a sail in a predominantly
>homeothermic animal (which I think dinosaurs were), especially one living in
>a climate of temperature extremes from night, might make a lot of sense.
I agree - I thought reduction of surface area to volume ratio was something every large animal strived for. BTW - Does anyone think sauropod necks and tails would have helped them for the same reasons (this sounds familiar, forgive me if somebody's asked this before)?
David