[Previous by date - Re: Nomina Conversa]
[Next by date - Re: Nomina Conversa]
[Previous by subject - Re: Nomina Conversa]
[Next by subject - Re: Nomina Conversa]
Date: Thu, 12 Apr 2001 15:07:23 -0400 (EDT)
From: "T. Mike Keesey" <tmk@dinosauricon.com>
To: PhyloCode mailing list <phylocode@ouvaxa.cats.ohiou.edu>
Subject: Re: Nomina Conversa
On Thu, 12 Apr 2001, David Marjanovic wrote:
> > _Sauropsida_ *is* used for the stem group, and _Reptilia_ for the crown
> > clade. I've never heard of _Eureptilia_ before ... I thought I made it up!
>
> Michael J. Benton: Vertebrate Palaeontology. Second Edition, Chapman & Hall
> 1997
>
> has a cladogram on p. 130: (and a similar one on p. 247)
>
> Amniota
> |--Synapsida
> `--Sauropsida
> |--Mesosauridae
> `--Eureptilia
> |--Anapsida
> | `--+--Millerettidae
> | `--+--Procolophonidae
> | `--+--Pareiasauridae
> | `--Testudines
> `--+--Captorhinidae
> `--+--*Paleothyris*
> `--Diapsida
>
> "Cladogram showing the postulated relationships of the major groups of
> amniotes, based on Laurin (1991), Lee (1993, 1995), and Laurin and Reisz
> (1995)."
> I haven't read those papers; the *Eudibamus* paper puts Mesosauridae into
> Anapsida (which becomes Parareptilia if you remove turtles [called
> Testudines here]),
(probably a good idea, since _Chelonia_ is a genus)
> so Synapsida
(err, _Sauropsida_)
> and Eureptilia have the same content, although different definitions,
> at present.
Maybe I did see _Eureptilia_ before... anyway, seems like a preferable
name to me.
> Putting turtles out of the position shown above, as suggested by
> recent controversial studies, gives strange meanings to a
> crown-group-defined Reptilia. This may end up in Reptilia having the same
> contents as Sauria (another yucky name -- it is neither meant to have its
> traditional paraphyletic meaning "lizards"
Wasn't "Lacertilia" used for that group?
> nor to include all taxa that end in *-saurus*, see
> http://dinosauricon.com/taxa/sauropsida.html)
I would much prefer _Sauria_ to _Reptilia_. Birds are already
coelurosaurians, dinosaurians, and archosaurians; why not saurians as
well?
> > Oh yeah ... I wonder where I got those from ... I think "Ostei" would be
> > a much better name, but if these have priority....
>
> I can't recall to have seen them elsewhere... (It is not sure, however, that
> Teleostomi is useful. It may include any Gnathostomata.)
??? What's the definition of _Teleostomi_? It seems to me it would make
sense as a stem-based clade, perhaps sister to _Chondrichthyes_. I'm a
little ignorant about that part of the tree, though.
> > Although, as you mentioned, there is the alternative Theropsida for
> > _Synapsida_, and there's also Neotheropsida (I think Bakker named it) for
> > _Therapsida_. Tough call....
>
> Priority? Tossing a coin? :-)
> Theropsida was coined by Huxley in, as Sereno would say, a node-stem triplet
> (Amniota = (Theropsida + Sauropsida)), so it makes good sense,
I think I agree, although I've gotten used to Clade _Synapsida_ by now.
> and Therapsida has a long history of explicitely excluding mammals
> (whereas Dinosauria, Theropoda, Coelurosauria etc. have hardly ever
> explicitely excluded birds),
What do you mean by "explicitly excluding"? I don't think anyone ever
suggested putting birds in Dinosauria (or Theropoda or Coelurosauria)
until the '70's.
> so Neotheropsida is a lot more diplomatic.
True.
> BTW, Amphibia as something like (Lissamphibia [the quite old name for the
> crown clade] > Amniota), to be replaced by suitable species, is IMHO a good
> idea; has this already been proposed?
Yes, according to this page:
<http://phylogeny.arizona.edu/tree/eukaryotes/animals/chordata/terrestrial_vertebrates.html>
in
Laurin M. 1998a. The importance of global parsimony and historical
bias in understanding tetrapod evolution. Part I-systematics,
middle ear evolution, and jaw suspension. Annales des
Sciences Naturelles, Zoologie, Paris, 13e Srie 19:
1-42.
_____________________________________________________________________________
T. MICHAEL KEESEY
Home Page <http://dinosauricon.com/keesey>
The Dinosauricon <http://dinosauricon.com>
personal <keesey@bigfoot.com> --> <tmk@dinosauricon.com>
Dinosauricon-related <dinosaur@dinosauricon.com>
AOL Instant Messenger <Ric Blayze>
ICQ <77314901>
Yahoo! Messenger <Mighty Odinn>