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Re: "wing muscles"
From: Steve Gatesy <Stephen_Gatesy@Brown.edu>
To: email@example.com <firstname.lastname@example.org>
Date: Sunday, November 07, 1999 9:01 AM
Subject: Re: "wing muscles"
>Pat Norton wrote:
Wing muscles in birds are not used
>>for flapping or for flexion or extension of the wing during flapping
>>but to act upon the feathers, radius, ulna and the carpometacarpus to
>>the wing airfoil shape to enhance manueverability.
So then,...it is generally thought that pterosaurs >>didn`t<< use "wing
muscles" to adjust the camber of their wings (as noted in previous
discussions)? How do you know they didn`t? They had actinofibrils to
maintain stiffness and wing shape, but, were these passive structures, or
could they be modified by wing muscles? Is there any evidence for or against
Perhaps I should have stepped in and asked earlier when Jim Cunningham was
also taking part in this discussion, but I`m sure any of you could give a