Message 2004-10-0131: Re: Re: Fwd: Re: Fwd: PROPOSED ARTICLE X - autonyms

Sun, 19 Sep 2004 22:47:45 +0200

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Date: Sun, 19 Sep 2004 22:47:45 +0200
From: [unknown]
To: PML <>
Subject: Re: Re: Fwd: Re: Fwd: PROPOSED ARTICLE X - autonyms

----- Original Message -----
=46rom: "Philip Cantino" <>
Sent: Sunday, September 19, 2004 1:05 AM

> Louis Chinnery asked:
> >There are competing names, e.g. the typified Magnoliophyta. Could =
> >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=
> Coniferophyta, Lamiaceae and Labiatae).

I think an approach recently used much in vertebrate paleontology cou=
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 still existed.
** Proposed in Paris. Testudinata would be (I think) a node-based gro=
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: I don't=
 know the


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