Re: Arms into wings

["James R. Cunningham" <jrccea@bellsouth.net>]

> I did not consider the
> pterosaurs, for one thing their different flying structures. There is
> a greater corollary, for instance, between pterosaurs and bats.

There is very little similarity in the membrane support system of
pterosaurs and bats.Pterosaurs achieve chord-wise structural support in
the flight membrane by anisotropic tension in the membrane.  Bats do it by
using the fingers as compression battens.  The two systems are quite
different.
JimC