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Re: A note on pterosaur nesting behavior

On Jul 23, 2009, at 6:25 PM, David Peters wrote:

New paper on ptero eggs

Grellet-Tinner, Gerald, Wroe, Stephen, Thompson, Michael B. and Ji, Qiang(2007)'A note on pterosaur nesting
behavior',Historical Biology,19:4,273 — 277

Assuming they were archosaur eggs, yes, the eggs would probably have to be buried.
But if not archosaurs, the possibilities expand.

Based on the data in the paper, I don't entirely agree that the egg burial model depends on an archosaurian position. The structural traits examined by the authors are also indicative of egg burial in living squamates, for example. I don't see how alternative phylogenetic positions would actually change the functional conclusion based on physiological correlates in this case. Regardless, and interesting paper and well worth the quick read for anyone with an interest in pterosaurs.



Michael Habib, M.S.
PhD. Candidate
Center for Functional Anatomy and Evolution
Johns Hopkins School of Medicine
1830 E. Monument Street
Baltimore, MD 21205
(443) 280-0181