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Re: New paper on modeling dinosaur physiology

On Tue, Aug 13th, 2013 at 10:11 AM, David Marjanovic <david.marjanovic@gmx.at> 

> > Uninsulated small taxa, and all juveniles, presumably would have been 
> > ectothermic, with
> consequent diurnal and
> > seasonal variations in body temperature.
> Are there any isotope data from whichever ones count as "small"?

And how can we be sure what small taxa were uninsulated? It's difficult to 
prove the absence of 
integument that would only fossilise under extremely rare preservational 
conditions. Even in 
deposits where integument fossilises well, individuals of the same species in 
the same deposits can 
preserve integument differently.


Dann Pigdon
Spatial Data Analyst               Australian Dinosaurs
Melbourne, Australia               http://home.alphalink.com.au/~dannj