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Carnosaurs & Coelurosaurs (was Re: "Morosaurus" agilis)
At 06:18 AM 7/7/97 -0700, Jon Woolf wrote:
>Suppose instead you were to say "Coelurosauria is birds and all
>theropods sharing a more recent common ancestor with birds than with
>_Allosaurus_, and Carnosauria is _Allosaurus_ and all theropods sharing
>a more recent common ancestor with _Allosaurus_ than with birds." I
>think that says basically the same thing, but all the taxa referred to
>are firmly anchored by independent definitions and even the hint of
>circularity is gone.
Actually, I was going to write exactly what you wrote, which are the terms I
operate under. However, the text of Gauthier's definition of
"Coelurosauria" uses 'Carnosauria' rather than '_Allosaurus_', so (to avoid
confusion, or so was my intent) I used something close to Gauthier's
Yes, I personally prefer the phrasing you suggest here.
Thomas R. Holtz, Jr.
Vertebrate Paleontologist Webpage: http://www.geol.umd.edu
Dept. of Geology Email:firstname.lastname@example.org
University of Maryland Phone:301-405-4084
College Park, MD 20742 Fax: 301-314-9661