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Re: Crown groups
Not really following exactly what's going on here, but I've got a couple of
lame jokes to make here:
Where do PANda, PANcake, PANgaea, PANdora, PANorama, PANama and PANtanal fit
in here? (-_0)
What a pandemonium! (pan-stem clade of demonium?)
----Original Message Follows----
From: "T. Michael Keesey" <email@example.com>
To: Mailing List - Dinosaur <firstname.lastname@example.org>
Subject: Re: Crown groups
Date: Mon, 07 Jun 2004 18:11:47 -0700 (PDT)
--- email@example.com wrote:
> Keesey wrote:
> > So, why not have the same option in phylogenetic taxonomy? Panstem
> > _Synapsida_, Crown Clade _Mammalia_, Stem Clade _Saurischia_, Node
> > _Dinosauria_, Apomorphy Clade _Avialae_, etc.
> Yeah, but that kindof misses the point, which is that you can tell WHICH
> for which the "pan-" name is the total group: e.g., Panmammalia is the
> group of Mammalia. I don't see anything in your proposal that serves this
> purpose. So then why even bother?
This is true, and perhaps it would be good to have some sort of convention
crown and panstem clades, since they are in 1:1 correspondence with each
It just seems to me that mandating affixes is something we should we were
trying to get AWAY from.
I already gave my "Panpan" example of why this would not be a good idea in
instances. For some others:
Is _Panderichthys_ the panstem clade of _Derichthys_?
Is _Panthera_ the panstem clade of _Thera_?
Is _Panarthropoda_ the panstem clade of _Arthropoda_? (Well, they might try
redefine it that way, but that's not what it means now.)
Is _Panoplosaurus_ the panstem clade of _Oplosaurus_?
Is _Pantotheria_ the panstem clade of _Totheria_?
So, perhaps it's a good idea to link corresponding crowns and panstems in
way, but I don't see how this could be it. Perhaps we could allow hyphens in
this one instance (_Pan-mammalia_)? Or perhaps there's another solution.
And perhaps this discussion should move to the PhyloCode Mailing List....
> That's not to say this isn't an interesting idea in its own right...
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