RE: Georgia Theropod Named

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

> From: owner-dinosaur@usc.edu [mailto:owner-dinosaur@usc.edu]On Behalf Of
> Amtoine Grant
> Sent: Wednesday, April 20, 2005 1:46 PM
> To: dinosaur@usc.edu
> Subject: Re: Georgia Theropod Named
>
>
> Georgia being a southeastern state, that would mean this
> "tyrannosaurid" inhabited east of the Western interior Seaway.

If and only if Appalachiosaurus is in Tyrannosauridae proper. It is in my 
Dinosauria II chapter, but addition of new characters and
of Dilong pull it out to the Carr et al. position (the sister taxon to 
Tyrannosauridae).

And by any measure, it is a "tyrannosaurid" as traditionally understood: a 
large reduced-armed, incrassate-toothed,
arctometatarsalian-footed coelurosaur.

> Is it
> possible to do a comparison with the know postcranial remains of
> Dryptosaurus?
>
Yes, and it is a different animal. So at least two large tyrannosauroids 
inhabited eastern North America during the Late Cretaceous
(although we don't have evidence yet that they did so at the same time; Appa. 
is older than Drypto.)

                Thomas R. Holtz, Jr.
                Vertebrate Paleontologist
Department of Geology           Director, Earth, Life & Time Program
University of Maryland          College Park Scholars
        Mailing Address:
                Building 237, Room 1117
                College Park, MD  20742

http://www.geol.umd.edu/~tholtz/
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