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Re: Sauroparenting



On Sat, 20 Dec 2003, Mark Hallett wrote:
> There's no proof for this, but it's conceivable that
> sauropods, and some other dinosaurs for that matter,
> could have produced a nutrtious substance in their
> proventriculi or "crops" that might have been an
> analog to mammalian milk, rich in protein and
> vitamins, which they could have regurgitated for a
> period of time to feed hatchlings or nestlings.
> Columbiformes actually do this (breeders call it
> "pigeon's milk")exactly for this purpose.

Something I brought up once before when wondering about the rapid weight
gain young sauropods were capable of and if vegatation alone could account 
for that (or something along those lines).

> --- Dann Pigdon <dannj@alphalink.com.au> wrote:
> > zone65@bigpond.com wrote:
> > > 
> > > The question of how or if sauropods cared for
> > their young is extremely
> > > interesting, if vexing. I imagine the size
> > difference between newborn
> > > and adult would be the greatest in terrestrial
> > vertebrate history?
> > > Notwithstanding the grub-like young of
> > marsupials...
> > 
> > Marsupials have it easy - they have an in-built
> > pocket to keep their
> > joeys safe. Perhaps pandas are the closest sauropod
> > analogue as far as
> > caring for tiny offspring? At least sauropods didn't
> > have to
> > breast-feed!