[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Wilkinson's new pterosaur paper
Comments inserted below.
----- Original Message -----
From: "david peters" <email@example.com>
To: "jrc" <firstname.lastname@example.org>
Sent: Wednesday, July 11, 2007 9:04 AM
Subject: Re: Wilkinson's new pterosaur paper
So far, in the widest possible variety of pterosaurs, there is no evidence
for a wing tip to hind leg connection.
I've not seen any convincing evidence of a wing/hindlimb connection either.
But, I'm not ready to exclude it as a possibility. It is certainly
counterproductive in terms of aerodynamic efficiency for marine soarers
The two wing configurations 1) wingtip to elbow and 2) wingtip to thigh
are fundamentally different. The first has its origin distally, like a
bird. The other proximally, like a flying squirrel. You cannot have one
AND the other in the same clade.
I wouldn't argue that -- but, the trailing edge doesn't go to the elbow; it
usually passes about 40% of the length of the humerus behind the elbow. I
suspect that the trailing edge and wing root generally attach to the body
along the ilium (sp??). But, that isn't proven either.