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was: Wukongopterus and Darwinopterus now: cladistics.

M. Habib wrote:

Several robust studies indicate that this dichotomy does not work very well in 
many circumstances.  I can provide specific citations if need be, but a quick 
browse of Systematic Biology or Cladistics will provide several examples.


This sounds like a sledge hammer to the underpinnings of cladistic analysis. 
One concrete example would be most helpful. Take your time.

Turtles ancestors had temporal fenestra? Which is the ancestor with fenestra 
that your are thinking of?