RE: pteros have lift-off

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

> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] 
> On Behalf Of Thomas R. Holtz, Jr.
>
> > From: owner-DINOSAUR@usc.edu 
> [mailto:owner-DINOSAUR@usc.edu] On Behalf 
> > Of Tim Williams>
> > > And getting back to that arboreal theory, which theropods 
> prior to 
> > > Archaeopteryx and kin had long forelimbs?
> > 

[snip]

> _Guanlong_, a basal tyrannosauroid, is older than _Archaeopteryx_.
> Additionally, many of the dinosaur-bearing strata in the 
> Morrison are of Kimmeridgian age, making them older (although 
> not by much) than the Tithonian _Archaeopteryx_.

And, as I forgot to add, _Guanlong_ has quite long arms.

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