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Re: pteros have lift-off

There is a 'Z' fold available as part of the launch cycle in both the fore and hindlimbs of the pterosaurs that I've worked on.

----- Original Message ----- From: "David Peters" <davidpeters@att.net

Finally, in present day leapers, from frogs to kangaroos, sort of 'Z' fold gets created by the femur, tibia and tarsal/pedal elements. And lots of final push comes from the large pedal digits. Is there a z-fold analogy in the forelimb of pterosaurs. And is there lots of push coming from the manual digits? At present, I don't see either.