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Re: sauropod rearing

What do these caracteristics look like in juvenile and
sub-adult forms?

It must be considered that, with such enormous size
differences, many Sauropods must have had strongly different
pressures at different life-stages. Many of these
adaptations could be essential for opening up a wider
breadth of food for younger animals, and barring adults
bringing down large trees to make food accesible to young
relatives, adaptations related to rearing would seem to be a

It seems hard to imagine a large adult rearing, but then I
can't imagine a goat, or for that matter a groundhog
climbing a tree either. Nature is obviously more creative
than I am... hmm... tiny arboreal newborn sauropods...
lifted by their mothers...

-Jonas Weselake-George
Ottawa Paleontological Society

----- Original Message -----
From: <Ken.Carpenter@dmns.org>
To: <GSP1954@aol.com>; <dinosaur@usc.edu>
Sent: Monday, January 30, 2006 2:50 PM
Subject: RE: sauropod rearing

But tree-sloths also have a wide, rigid pelvis, as does the
Glyptodon. I
doubt these rear

Kenneth Carpenter, Ph.D.
Curator of Lower Vertebrate Paleontology/
Chief Preparator
Department of Earth Sciences
Denver Museum of Nature & Science
2001 Colorado Blvd.
Denver, CO 80205

Phone: 303-370-6392
Fax: 303-331-6492
for PDFs of some of my publications, as well as information
of the Cedar
Mountain Project:

-----Original Message-----
From: owner-dinosaur@usc.edu [mailto:owner-dinosaur@usc.edu]
On Behalf
Of GSP1954@aol.com
Sent: Monday, January 30, 2006 12:47 PM
To: dinosaur@usc.edu
Subject: Re: sauropod rearing

In a message dated 1/30/06 11:27:55 AM, rtravsky@uwyo.edu

<< The pelvic region has always looked too rigid to permit
much in the
way of rearing, particularly if there are large neural
spines. A quick
hop up, but a sustained rearing...? >>

Say what? Rigidity would be a good thing for rearing. That's
pelvo-sacral complexes are so robustly built, especially in
slothes adapted for rearing.

G Paul