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Re: Wilkinson's new pterosaur paper, Cunningham, Habib




----- Original Message ----- From: "david peters" <davidrpeters@earthlink.net>
To: <dinosaur@usc.edu>
Sent: Thursday, July 12, 2007 4:18 PM
Subject: Re: Wilkinson's new pterosaur paper, Cunningham, Habib



Time to remember: Theoretical wing shapes are not real even though they could be.

Keep in mind that irregularities like holes behind the elbow can be due to differential preservation. Bacteria may preferentially like fat pockets? Pneumatic areas degrade more easily? Etc.


I think the point that you are making may be that birds can be expected to evolve for greater efficiency, while pterosaurs can't.

JimC