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Re: Revised Ornithischian Classification



----- Original Message -----
From: "Ken Kinman" <kinman@hotmail.com>
To: <dinosaur@usc.edu>
Sent: Wednesday, August 22, 2001 8:55 PM
Subject: Re: Revised Ornithischian Classification


> [...]
> But on the other
> hand, reducing formal paraphyly to zero (automatic rejection of all such
> taxa) is not only impractical, but too simplistic and philosophically
> untenable in reflecting the complexities of evolutionary history.

Impractical, maybe, but why philosophically untenable? I mean, paraphyletic
_species_ are retained, at least by the PhyloCode, for IMHO obvious reasons.