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Date: Sun, 19 Sep 2004 22:47:45 +0200
To: PML <email@example.com>
Subject: Re: Re: Fwd: Re: Fwd: PROPOSED ARTICLE X - autonyms
----- Original Message ----- =46rom: "Philip Cantino" <firstname.lastname@example.org> Sent: Sunday, September 19, 2004 1:05 AM > Louis Chinnery asked: > > >There are competing names, e.g. the typified Magnoliophyta. Could = the > >existing typified names be used for one class of clade providing t= hat the > >name is not currently being applied to a polyphyletic group? > > Magnoliophyta could be defined as applying to the panstem, but this > would likely confuse people because Magnoliophyta and Angiospermae > are widely understood by botanists to be alternative names for the > same clade. The same applies to other pairs of typified versus > untypified names (e.g., Equisetophyta and Sphenophyta, Pinophyta an= d > Coniferophyta, Lamiaceae and Labiatae). I think an approach recently used much in vertebrate paleontology cou= ld easily be extended to these cases. There are many former synonyms tha= t have been given different definitions, such as: now panstem now crown Eutheria Placentalia Metatheria Marsupialia Ophidia* Serpentes snakes Testudinata** Testudines turtles Ornithurae*** Neornithes birds Craniata**** Vertebrata**** Similar cases: larger smaller Ichthyopterygia Ichthyosauria (fossil) Carinatae Neognathae (most extant birds) * Ophidia is stem-based, but would only be a panstem if the mosasaurs http://www.oceansofkansas.com/about-mo.html still existed. ** Proposed in Paris. Testudinata would be (I think) a node-based gro= up slightly larger than Testudines. *** Three different definitions, none of which includes *Archaeoptery= x*, but all of which describe clades significantly larger than the crown. **** No fossils involved here, just the phylogeny of the living: http://tolweb.org/tree?group=3DCraniata&contgroup=3DChordata. I don't= know the definitions.