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Date: Tue, 24 Apr 2001 09:03:58 -0400
From: Kevin de Queiroz <Dequeiroz.Kevin@NMNH.SI.EDU>
To: PhyloCode@ouvaxa.cats.ohiou.edu
Subject: Re: Fwd: Vermes
Actually, the situation is somewhat complicated, and Recommendation 10A = does not actually say that a name that was previously used to refer to a = paraphyletic group should not be used in preference to one that has been = explicitly used for the clade in question. The reason is that the = advantages of using a name that has been explicitly applied to a clade can = be offset by its lack of familiarity and use. One of the primary = functions of taxon names is to provide access to the literature, and = therefore it may sometimes be preferable to use a name that was formerly = applied to a paraphyletic group if that name is more widely known and = used. Thus, the person who first establishes the name of a particular = clade (the "first revisor") has the responsibility of making a thoughtful = decision. The case or "Synapsida" vs. "Theropsida" is a good example of = this tradeoff. =20 Kevin de Queiroz >>> "T. Mike Keesey" <tmk@dinosauricon.com> - 4/23/01 1:21 PM >>> On Mon, 23 Apr 2001, Philip Cantino wrote: > If I interpret correctly what Mike is saying, I think both of his > suggestions are already covered by Recommendation 10A. The first > sentence of Rec. 10A ("Clade names should be selected in such a way > as to minimize disruption of current usage") addresses Mike's concern > about conversions that drastically change membership. The rest of > 10A recommends the use of a preexisting name for the clade to be > named rather than adopting (with expanded membership) a preexisting > name of a paraphyletic group stemming from the same ancestor as the > clade to be named. I think this is the same thing that Mike is > suggesting. Whoops! You're correct. I've read the code through a couple times, but apparently that wasn't enough.... Anyway, wouldn't this recommendation probably go against the "cladization" of _Reptilia_ and _Osteichthyes_? And wouldn't it definitely advocate usage of _Theropsida_ and _Neotheropsida_ over _Synapsida_ and _Therapsida_ (respectively)? ___________________________________________________________________________= __ T. MICHAEL KEESEY Home Page <http://dinosauricon.com/keesey> The Dinosauricon <http://dinosauricon.com> personal <keesey@bigfoot.com> --> <tmk@dinosauricon.com> Dinosauricon-related <dinosaur@dinosauricon.com> AOL Instant Messenger <Ric Blayze> ICQ <77314901> Yahoo! Messenger <Mighty Odinn>