RE: Raptors Are Not Dinosaurs? Oh, My!

["Thomas R. Holtz, Jr." <tholtz@geol.umd.edu>]

> From: Mike Taylor [mailto:mike@indexdata.com]
>
> > Date: Wed, 27 Aug 2003 07:47:57 -0400
> > From: "Thomas R. Holtz, Jr." <tholtz@geol.umd.edu>
> >
> > Not yet. I used it in my disseration for the Ceratosauria-Tetanurae
> > clade, and I've heard that others want to employ it for a
> > coelophysoid + ceratosaur + tetanurine clade.
>
> Woah!  Those clades aren't the same?  So the coelophysoids (including
> dilophosaurs?) have come out of Ceratosaria now?  (Sorry, I'm a bit
> behind.)

Yes, several recent studies support a topology of Coelophysoidea +
(Ceratosauria + Tetanurae); in fact, classical "coelophysoids" are
paraphyletic in Rauhut's analyses. Interestingly, this is the topology
proposed by Bakker (in Dinosaur Heresies, and the Nanotyrannus paper), Greg
Paul (in PDW), and some other non-numeric studies in the mid-1980s.

                Thomas R. Holtz, Jr.
                Vertebrate Paleontologist
Department of Geology           Director, Earth, Life & Time Program
University of Maryland          College Park Scholars
                College Park, MD  20742
http://www.geol.umd.edu/~tholtz/tholtz.htm
http://www.geol.umd.edu/~jmerck/eltsite
Phone:  301-405-4084    Email:  tholtz@geol.umd.edu
Fax (Geol):  301-314-9661       Fax (CPS-ELT): 301-405-0796