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RE: TYRANNOSAURIAN IMPLOSION [long; part 1 of 2]
> From: firstname.lastname@example.org [mailto:email@example.com]On Behalf Of
> Perhaps the most interesting way to attack this problem would be to run
> cladistic analyses of >the specimens themselves<. Get as many
> characters as
> possible from the specimens, plug these into a computer, and see how the
> specimens group together. If you get lots of unresolved
> polychotomies, you're
> probably dealing with a single species with a fair amount of individual
> variation. If you get clumps, these may represent definable species or
> subspecies. If you get a Hennigian comb, you may be seeing the staged
> evolution of a single species. And so on.
Actually, Carr & Williamson did this a few years ago for a poster at SVP
(didn't include the Mongolian forms, though), and I have a similar project
in the back burner.
Thomas R. Holtz, Jr.
Department of Geology Director, Earth, Life & Time Program
University of Maryland College Park Scholars
College Park, MD 20742
Phone: 301-405-4084 Email: firstname.lastname@example.org
Fax (Geol): 301-314-9661 Fax (CPS-ELT): 301-405-0796