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Re: Pterosaur wing membranes
If I remember correctly, BSP 1937 I 18 is the Vienna specimen (a photo is
shown on page 150 of Wellnhofer's Encyclopedia). It is taken by some to be
a clear indication of an ankle attachment (I can't see that myself). It
could also show torso skin that has flattened out laterally as the soft
tissues decomposed, rather than a thigh attachment. Note that I think it
quite likely that some species did have thigh or ankle attachments -- I just
haven't seen unambiguous proof of any specific attachments yet, narrow or
otherwise. The thing I've always found most interesting about the Vienna
specimen is the ovoid structure immediately behind the elbow and the
extremely narrow aft chord at the elbow. No matter what the membrane did
inboard of the elbow, the wing was narrow outboard of it. I agree with
Bennett re the narrow distal chord, but have no particular reason to think
the inboard patagium was particularly stretchy fore and aft.
Does anyone have a link to a photo of NHMW 1975/1756 ?
----- Original Message -----
From: "Christopher Collinson" <firstname.lastname@example.org>
To: <email@example.com>; <firstname.lastname@example.org>
Sent: Tuesday, May 16, 2006 8:13 PM
Subject: Re: Pterosaur wing membranes
I will say that there are several good
specimens of Pterodactylus that show the
brachiopatigum attached to mid thigh NHMW 1975/1756
and BSP 1937 I 18.
Also, there is no reason to believe that ankle
attachment has to equal broad wing or vice a versa.
The elastic nature of the patigum would likely have
resulted in a narrow distal chord regardless of the
point of attachment(Bennett 2000.)