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Date: Tue, 14 Sep 2004 06:56:04 -0700 (PDT)
From: [unknown]
To: Mailing List - PhyloCode <phylocode@ouvaxa.cats.ohiou.edu>
Subject: Re: Fwd: Re: Panstems
--- Mike Taylor <mike@indexdata.com> wrote: > Instead of a clade-naming rule or recommendation, I commend a simpl= e > suggestion that has been made on this list (perhaps by Mike Keesey?= I > don't recall). When the name of a clade is written or spoken in a = way > that might be ambiguous, it should be disambiguated simply by sayin= g > "crown" or "panstem" first. Thus we might say that _Confuciusornis= _ > is a member of "panstem Aves", but not of "crown Aves". I suggested identifying the type of the clade using an optional title= (and apparently others have as well), but I never suggested that two diffe= rent clades could have the same name but different titles. It would have t= o be "Panstem Clade _Panaves_" and "Crown Clade _Aves_". Incidentally, in the mathematical notation I proposed earlier (and am= working on a second revision of), you could easily specify which crown a pans= tem corresponded to with a parenthetical comment, e.g., "_Sphenacodontida= e_ is a Permian subclade of _Synapsida_ (=3DpanstemClade(_Mammalia_))." =3D=3D=3D=3D=3D =3D=3D=3D=3D=3D> T. Michael Keesey <http://dino.lm.com/contact> =3D=3D=3D=3D=3D> The Dinosauricon <http://dinosauricon.com> =3D=3D=3D=3D=3D> Instant Messenger <Ric Blayze> =3D=3D=3D=3D=3D =09=09 __________________________________ Do you Yahoo!? Yahoo! Mail Address AutoComplete - You start. We finish. http://promotions.yahoo.com/new_mail=20