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Re: phytosaurs/parasuchians/PJ Crush

David Peters (davidrpeters@earthlink.net) wrote:

<Walker suggested that phytosaurs and proterochampsids were sister taxa. A
short cladistic analysis indicates it might be true. Any stoppers? (?that
is, any reason not to associate the two clades?)>

  A lot of Walker's views on archosauromorph phylogeny were erroneous,
that's maybe one reason to question his supportive features. Another ... a
short cladistic analysis. Try something bigger. A few hundred taxa, a few
hundred to a thousand characters. Lots of variation in Archosauromorpha,
and lots of convergence.


Jaime A. Headden

  Little steps are often the hardest to take.  We are too used to making leaps 
in the face of adversity, that a simple skip is so hard to do.  We should all 
learn to walk soft, walk small, see the world around us rather than zoom by it.

"Innocent, unbiased observation is a myth." --- P.B. Medawar (1969)

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