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RE: Neovenatoridae and Megaraptora: now it can be told!

> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] 
> On Behalf Of David Marjanovic
> >  Tim Williams and myself have suggested the possibility *Rapator*  
> > repr= esents a pdI-1 phalanx of an alvarezsaurian (possibly a  
> > mononykid=2C based = on morphology=2C but this is even more  
> > far-fetched due to biogeography reas= ons).
> A mononykine would be far-fetched, but an alvarezsaurid in 
> general would not be -- South America and Australia weren't 
> isolated from each other.

I have published (in Dinosauria II) my speculation that Rapator is a giant
early alvarezsaurid. However, now that I have a cast of the specimen, and
with the information of megaraptorans in hand (as it were), I reject my
earlier speculation and much more strongly support Rapator as a basal
tetanurine, possibly a megaraptoran.

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
Fax: 301-314-9661               

Faculty Director, Earth, Life & Time Program, College Park Scholars
Faculty Director, Science & Global Change Program, College Park Scholars
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