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Re: Combined answer Archaeopteryx running...
On Fri, Mar 08, 2002 at 12:09:38PM -0800, James R. Cunningham sent:
> Williams, Tim wrote:
> > However, at a certain point (probably early in the Pygostylia) it
> > became advantageous to dedicate the manus and carpus to flight, so
> > both were absorbed into the wing.
> Then why did pterosaurs retain the manus all the way to the K/T?
Because they walked on it?
That seems to be the essential distinction; there's a lot of advantage
to not having your primary limbs skidding around when you're moving on
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