[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
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