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Re: A new theropod cladogram
On Fri, 9 Feb 1996 Stang1996@aol.com wrote:
> Before you say it, yes I know there is no way in hell this will line up, but
> oh well.
> Ce M Ca O Ar Ty Bu Al Bi
> \ \ \ \ \ \ \ \ /
> \ \ \ \ \ \ \ 1
> \ \ \ \ \ \ \ /
> \ \ \ \ \ \ 2
> \ \ \ \ \ \ /
> \ \ \ \ \ 3
> \ \ \ \ \ /
> \ \ \ \ 4
> \ \ \ \ /
> \ \ \ 5
> \ \ \ /
> \ \ 6
> \ \ /
> \ 7
> \ /
> Ce = Ceratosauria; M = Megalosauroidea; Ca = Carnosauria; Or =
> Ornitholestidae; Ar = Archaeopterygiformes (including Oviraptorisauria); Ty =
> Tyrannosauroidea (?including Compsignathidae); Bu = Bullatosauria; Al =
> Alvarezsauria; Bi = all other Birds.
> 1 is unnamed (AFAIK);
It's called Metornithes in the description of _Mononykus_. I'm not
totally sure about the closeness of _Alvarezsaurus_ and the Mononykidae.
The Mononykidae do belong where you put them, but based on foot structure
and hypershortened cervical neural spines, I'm thinking _Alvarezsaurus_
may be related to _Microvenator_ and the other oviraptorosaurs.
> 2 is unnamed (AFAIK);
I think, based on pelvic and pedal characters, that tyrannosaurs and
bullatosaurs most probably do form a monophyletic clade, the
3 is arctometatarsalia;
Birds, _sensu stricto_, are not arctomets. I misspoke when I said so
several weeks ago.
> Maniraptora or Manuraptoriformes or Avialae or Aves (take your pick); 5 is
> Coeluria (or Coelurosauria); 6 is Avetheropoda or Neotetanurae; 7 is
> Tetanurae; 8 is Theropoda.
> Carnosauria (I would very much prefer Paul's Allosauria, but I would be the
> only that would use it),
Not at all. I much prefer Allosauria for this clade. Allosauria is more
precise, and Carnosauria too confusing.
> Add onto that, the Ceratosauria,
> and you have Theropoda.
I have a sneaking suspicion that "neoceratosaurians" are closer to
tetanurans than Coelophysoids are. Now to try to prove it...
> Peter Buchholz
Pacific Lutheran University
Tacoma, WA 98447
"If you can't convince them, confuse them." -- Harry S Truman