[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Tracy Ford wrote:
The range that T. rex had is greater than the Asia forms.
T. Rex. Alberta, Saskatchewan, Montana, Wyoming, North and South Dakota,
Colorado, Utah, New Mexico, Texas?
How certain is the generic or specific assignments of the tyrannosaurid
specimens from some of these localities? I have in particular mind the
specimen from Texas. In Ken Carpenter's 1990 _Dinosaur Systematics_ paper, I
remember he made a special point of the fact that the maxilla (the only
material recovered) of the Texas "Tyrannosaurus rex" differed in general
shape from other T. rex specimens. How about the Colorado, Utah and New
Mexican "T. rex" material? Some of that is just postcrania or crania bits
that happen to be T. rex size. I think there is a healthy chance that we
have another species or genus here. Of course, we won't know for sure until
more is found. Any commentary?
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com