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Date: Mon, 05 Feb 2001 16:47:58 -0600
From: "David M. Hillis" <dhillis@mail.utexas.edu>
To: PhyloCode@ouvaxa.cats.ohiou.edu
Subject: apomorphy-based names
<!doctype html public "-//W3C//DTD W3 HTML//EN"> <html><head><style type="text/css"><!-- blockquote, dl, ul, ol, li { margin-top: 0 ; margin-bottom: 0 } --></style><title>apomorphy-based names</title></head><body> <div>In response to Jonathan Wagner's proposals:</div> <div><br></div> <div>Speaking as someone who hates the idea of apomorphy-based definitions of clades, I would NOT want to see recommendations that suggest their use. I've had to accept that some people would like to include them in the code, and that some people even prefer them, but I certainly don't see any reason why we should recommend them. I would not use apomorphy-based definitions for any name, whether or not the name suggests an apomorphy. I think a node-based definition of <i>Tetrapoda</i> is clear, but woe unto those who would try to restrict the name to things with four feet (whatever that might mean, which is, of course, a completely subjective decision on the one hand, and completely inaccurate on the other). It would really get absurd trying to pin an apomorphy-based definition on a clade based on a name created from an apomorphy that was imagined: <i>Gastrotheca</i> comes to mind. <i>Gastrotheca</i> is a clade of frogs that is supposed to be named for the distinctive pouch that the females use to carry their eggs (hence the name stomach-pouch). The problem is that none of the species of <i>Gastrotheca</i> have a pouch on their stomach; instead, they all have it on their backs. Pinning names based on apomorphies to apomorphy-based definitions simply extends the myth that some apomorphies are "essential" to the particular clade, or that scientific names are necessarily meaningful. I think we should do everything we can to shed that old essentialism.</div> <div><br></div> <div>David</div> <div><br> David M. Hillis<br> Director, School of Biological Sciences<br> Director's office: 512-232-3690 (FAX: 512-232-3699)<br> Alfred W. Roark Centennial Professor<br> Section of Integrative Biology<br> University of Texas<br> Austin, TX 78712<br> Research Office: 512-471-5792<br> Lab: 512-471-5661<br> FAX: 512-471-3878<br> E-mail: dhillis@mail.utexas.edu</div> </body> </html>