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Re: don' t think that flies





On Mon, 24 Nov 2008, Dann Pigdon wrote:
Quoting "Richard W. Travsky" <rtravsky@uwyo.edu>:
On Mon, 24 Nov 2008, Dann Pigdon wrote:
Quoting Graydon <oak@uniserve.com>:
On Sun, Nov 23, 2008 at 11:20:31PM +0100, David Marjanovic scripsit:
Nest Structure for Sauropods: Sedimentary Criteria for Recognition ...
PALAIOS; February 2004

Oops.

That's not evidence against piling heaps of vegetation over the nests and walking away, is it?

It's evidence against a buried-in-sand, sea-turtle style nest; it's not
evidence against a Mallee fowl style nests, though.

The problem with burying eggs in vegetation is that it heats up as it rots. Mallee fowls and megapodes have to constantly tend their nest mound, checking the temperature inside them with their beaks and either scraping vegetation out (if it's getting too hot) or adding more to the mound (if it's cooling down). If the nest mound gets too cold or too hot, then the eggs die.

Tending would require staying in the same locality for an extended period of time and local food resources for a creature the size of a sauropod I'm sure would run out.

Lots of animals fast while tending their nests. Sauropods could have built up huge reserves of fat prior to nesting.

I would think that'd conjure up a whole different set of issues!

I have this horrible image now of a fat sauropod...