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RE: Extinction

>  Today, ALL crocodylians have ESD and being the living 
> sister-group of dinosaurs this suggests that, one,  dinosaurs may 
have had 
> ESD.

This assumes, of course, that dinosaur physiology did not control 
their temperature.  I prefer to use birds to compare physiology, being 
the main progenetic group of the dinosaurs.  And, as far as I know, 
birds don't rely on ESD (but I may be wrong?).


Neil Clark
Curator of Palaeontology
Hunterian Museum
University of Glasgow
email: NCLARK@museum.gla.ac.uk

Mountains are found in erogenous zones.
(Geological Howlers - ed. WDI Rolfe)