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Re: Dinosaur theories.



> >>Data which was not available to him when he wrote
> >>"Heresies" show that dinosaurs had a mammalian growth style when juveniles,
> >>then slowed down at adulthood.

>  The body of evidence out there now (including
> the work of Dr. Chinsamy and her colleagues) strongly suggests ontogenetic
> heterometabolism; that is to say, radically different metabolic  rates and
> functions between juveniles and adults.  For example, a hadrosaur or
> sauropod hatchling may have started out as a mammalian-style endotherm, then
> shifted gears, as it were, become a gigantotherm after reaching a certain
> size. > >
> >
> 
> Thomas R. HOLTZ
>

I have seen reference to this theory but have never seen an explanation.  
Presumably there is more to it than growth rate?  Could someone expand on 
this please, and/or provide a reference or two?

Thanks

Tony Canning
tonyc@foe.co.uk