RE: Two Mysterious Tyrannosauroids

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

> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] 
> On Behalf Of Jaime A. Headden
>
>   Based almost solely on the applied provenance of the 
> specimen, and the ratio of humerus to femur, it reminds me 
> only of *Shanshanosaurus*, which is almost certainly a 
> juvenile, and may (likely is) a synonym of *Tarbosaurus*.
> 
> http://www.westernpaleolabs.com/images/Henry.jpg
> 
The claim is that it is from the Early Cretaceous ("~120 mya"), so it is
unlikely that it is from the Nemegt. Furthermore, as reconstructed it seems
to have three digits per manus. However, who knows a) what the stratigraphic
provenance REALLY is and b) how complete the specimen really is.

Thomas R. Holtz, Jr.
Email: tholtz@umd.edu   Phone: 301-405-4084
Office: Centreville 1216                        
Senior Lecturer, Vertebrate Paleontology
Dept. of Geology, University of Maryland
http://www.geol.umd.edu/~tholtz/
Fax: 301-314-9661               

Faculty Director, Earth, Life & Time Program, College Park Scholars
http://www.geol.umd.edu/~jmerck/eltsite/
Fax: 301-405-0796

Mailing Address:        Thomas R. Holtz, Jr.
                        Department of Geology
                        Building 237, Room 1117
                        University of Maryland
                        College Park, MD 20742 USA