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Re: was: Wukongopterus and Darwinopterus now: cladistics.
On Nov 30, 2009, at 11:59 AM, David Peters wrote:
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.
Hardly - it simply means that purely dichotomous systems are often
inadequate. Other types of codings include things like multi-state
characters, ordered characters, and continuous characters. See:
Pimentcl and Riggins, 2008; Jenner, 2002; Rouse & Fauchald, 1997;
Rouse, 2001; Strong & Lipscomb, 1999; Forey & Kitching, 2000; Hawkins
et al., 1997; Hawkins, 2000
Turtles ancestors had temporal fenestra? Which is the ancestor with
fenestra that your are thinking of?
Many recent phylogenies place turtles somewhere within Diapsida
(deBraga & Rieppel, 1996, 1997; Rieppel & Reisz, 1999; Hedges &
Poling, 1999; Mannen & Li, 1999). In such trees, the lack of fenestra
in turtles is recovered as a reversal.
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