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RE: Herrerasaurus - what was it?

> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] 
> On Behalf Of B tH
> Agree or disagree?
> http://www.geol.umd.edu/~tholtz/G104/figures/104Saurischia.png
> Is my fave Triassic dino a theropod or not?
> What's the consensus?  Or the factions?
It's on my website, so it must be true...

Triassic saurischian workers still disagree. Some are still finding it as a
basal theropod, other as a basal saurischian. When you are in that part of
the tree, things get really vague. Analogous problems exist for Guaibasaurus
(basal theropod, basal saurischian, or basal saur... Well, let's just say a
new strong alternative has come up), the silesaurs (basal ornithsichians,
dinosaurian sister group, or both?), and so on.

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