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Re: pterosaur aerodynamics
Meanwhile there is evidence in some specimens that ankles WERE
>>>>>> Show us/me your jpeg, Senator McCarthy. Unless you're talking
about the uropatagium, but then we weren't talking about the
One important piece of evidence in the nature of pterosaur wing
the nature of the fifth toe. Peters has reconstructed this toe as a
in virtually all reconstructions I have seem. However, in at least two
different pterosaurs (*Sordes* and *Jeholopterus*) the digit is
the margin of a membrane.
>>>>>> Again, show us/me your jpeg and/or reconstruction.
Unlike bats, the leg is not twisted distally and I
think it unlikely the digit was oriented medially to support a
though possible if the digit itself twists toward the tail.
However, it seems
more likely the digit, as articulated in countless specimens, is
>>>>>>Except that we have a footprint that shows it posteriorly
Sauria Aberrante? And its predecessor, Rotodactylus?
and may even fold laterally, collapsing into the foot during
taphonomy (BIG speculation!),
>>>>>>Better to stick to the data rather than speculate.
which would nonetheless allow the integumental
association be tarsal, not hip-based. Yet this does not argue for a
chord design, only distal articulation of the wing membrane.
>>>>>>You mean proximal? Distal = wing tip?
These are two
distinct pieces of anatomy.
Jaime A. Headden
"Innocent, unbiased observation is a myth." --- P.B. Medawar (1969)
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