re: Karlsruhe wing question

[David Peters <davidrpeters@earthlink.net>]

Just saw the Karlsruhe wing under the computer "microscope" prior to
sending Jim Cunningham a sample near the ankle. As I mentioned to Jim,
I'll let him make a pronouncement as to what that portion of the wing
means, but that still allows me to ask a question:

Since aktinofibrils are well known from the distal part of the pterosaur
wing and less well known (or even absent) proximally, if one sees what
appears to be a trailing edge set of well-packed aktinofibrils on a
membrane that crosses the tibia to the medial side of the ankle, does
that mean we may be seeing a piece of distal wing membrane there?

Dr. Unwin wrote:
>> It has a beautifully preserved cheiropatagium with superbly preserved
wing fibres and a clear line of attachment running right down the crus
to the distal end of the tibia. <<

Thanks for the confirmation!

David Peters
St. Louis