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RE: Campbell's even crazier than a MANIAC?
Mickey Mortimer wrote:
> Because "With the rotation
> of the digits and other modifications to the manus, the use of the unguals
> for grasping in the traditional
> sense was lost. That is, the use of the unguals to grasp prey, or vegetation
> for climbing in the normal
> manner, does not work because the unguals now point anteriad, ..."
Silly question.... but how would _Archaeopteryx_ climb trees without using its
hands "in the normal manner"? Curiously, a climbing _Archaeopteryx_ has been
integral to the idea of a "trees-down" origin of flight for birds, which
Campbell (following Martin and Feduccia) are pushing - as opposed to a
(BTW, I'm not necessarily arguing against a "trees-down" origin of flight.
However, despite what has sometimes been asserted, "trees-down" is not at odds
with "ground-up" [because pro-avians may have exhibited both 'cursorial' and
'arboreal' behaviors to varying degrees], and "trees-down" is entirely
compatible with birds being theropod dinosaurs.)
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