Re: Fragilis vs. atrox

["Thomas R. Holtz, Jr." <th81@umail.umd.edu>]

At 04:01 PM 7/8/99 PDT, Kevin Hedgpeth wrote:
>Here's a question:
>
>_Allosaurus fragilis_ and/or _Allosaurus atrox_?
>
>Same species or two different species?
>
>"Predatory Dinosaurs of the World" shows them as the latter with some very 
>different cranial features.  I've also seen written references citing the 
>two species names as interchangeable.
>
>Just trying to verify.

Dan Chure is addressing this problem in his as-yet-unpublished, on going
work on allosaurid systematics.  The question remains open for now.

                        Thomas R. Holtz, Jr.
                        Vertebrate Paleontologist
Deptartment of Geology                  Director, Earth, Life & Time Program
University of Maryland                  College Park Scholars
College Park, MD  20742       
Webpage: http://www.geol.umd.edu        Phone:301-405-4084
Email:tholtz@geol.umd.edu               Fax:  301-314-9661