Re: Dinosauricon Phylogeny: in progress

["T. Michael Keesey" <mightyodinn@yahoo.com>]

--- Nick Gardner <ratites637@hotmail.com> wrote:
> > > What supports _Brontosaurus_ being a separate species?
> >
> >You mean genus?
> >I am provisionally (note that word!) using special stem-based definitions 
> >for
> >all genera:
> >(x is a species.)
> >Genus(x) = Clade(x <- all other species used as internal specifiers for 
> >genera)
> 
> So in otherwords, you're going to split up genera, as opposed to lumping 
> them,

In essence. My real aim was to formulate some kind of objective criterion to
use until genera are properly co-opted into PT. It just so happens to agree
with splitting.

I've posted on this provisonal strategy earlier, pointing out some pitfalls.
It's not perfect, but I'm going to use it for now.

> does this mean that North American ornithomimids will be polygeneric, 
> as opposed to be lumped into _Ornithomimus_?

As long as the species aren't synonymous, yes. (see again:
http://dino.lm.com/_temp/nodes.php)

> Is it? I thought that _Neovenator_ has always been considered a 
> carcharodontosaurine.

Not according to the original paper, it seems:
Hutt, S.; Martill, D. M. & Barker, M. J. (1996): The first European
allosaurid dinosaur (Lower Cretaceous, Wealden Group, England). N. Jb. Geol.
Palaont. Mh., 1996 (10): 635-644; Stuttgart.

For more: http://www.cmnh.org/dinoarch/1996Sep/msg00343.html (Naish)

If this is no longer thought by anyone to be the case, I'll move it to
_Carcharodontosauridae_.

> >I think there's been DML discussion on this, but it could be argued that
> >_Troodon_, being a tooth taxon, should be considered dubious. Dubious taxa 
> >are
> >simply shown as _incertae sedis_, since the designation of _nomen dubium_ 
> >is a
> >little subjective (or, at best, prone to change) for my tastes. (Well, so 
> >is
> >_incertae sedis_ -- but I kind of need that one.)
> >
> 
> So you regard the other material as _Stenonychosaurus_?

Yes (and I should look into the possibility of _Pectinodon_ being separate as
well).

Some earlier posts on the topic:
http://www.cmnh.org/dinoarch/1997Aug/msg00810.html (Buchholz)
http://www.cmnh.org/dinoarch/2001Jun/msg00514.html (Headden)

=====
=====> T. Michael Keesey <keesey@bigfoot.com>
=====> The Dinosauricon <http://dinosauricon.com>
=====> BloodySteak <http://bloodysteak.com>
=====> Instant Messenger <Ric Blayze>
=====

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