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Re: Sauropod browsing energetics

2011/3/24 Dann Pigdon <dannj@alphalink.com.au>:
> On Fri, Mar 25th, 2011 at 8:28 AM, Augusto Haro <augustoharo@gmail.com> wrote:
> Am I right in assuming that sauropod remains are extremely rare (or 
> non-existent) in areas that
> would have experienced extreme cold? Certainly there have never been any 
> sauropod remains
> from the Victorian Early Cretaceous deposits in Australia, which would have 
> been at around 75
> degrees south latitude at the time. Sauropod tracks are known from Queensland 
> and Western
> Australia at the time, but these are further north (roughly 65 and 55 degrees 
> latitude respectively).
> If this was the case (and not just a matter of preservational bias), then it 
> may suggest that
> sauropods were optimised for dumping heat rather than retaining it.
May be... or just less than necessary vegetal production per time and area?