RE: Lack of Running Giant Theropod Tracks

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

> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] 
> On Behalf Of Don Ohmes
>
> Given that T. rex was the only mega-theropod (afaik) that 
> might *not* have had "the sauropod option", and also lived 
> late in the dinosaur-ian era, I did not see any reason to 
> exclude sauropods -- especially when how they both evolved to 
> what they were is at the root of all these debates. So I 
> jumped to a conclusion...
> 
On the contrary: the northern (Canadian) tyrannosaurids Albertosaurus, 
Gorgosaurus, and Daspletosaurus also seem to have lacked the
"sauropod option" as well.

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, Science & Global Change Program, College Park Scholars
http://www.geol.umd.edu/sgc
Fax: 301-314-9843

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