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RE: hadrosaurs

> From: owner-dinosaur@usc.edu [mailto:owner-dinosaur@usc.edu]On Behalf Of
> KellyMilnerH@aol.com
> Is there a rough, ballpark estimate on how many hadrosaur species
> have been
> found?

Say three dozen, perhaps?

And who is considered THE expert on duckbills?

Nobody!  There certainly are several experts, but it is misleading (and
authoritarian) to say any one individual is THE expert on duckbills, or
ceratopsids, or tyrants, or whatever.

Some top duckbill folks, off the top of my head, in alphabetical order:
Brett-Surman, Drexler, Forster, Horner, Wagner, Weishampel

                Thomas R. Holtz, Jr.
                Vertebrate Paleontologist
Department of Geology           Director, Earth, Life & Time Program
University of Maryland          College Park Scholars
                College Park, MD  20742
Phone:  301-405-4084    Email:  tholtz@geol.umd.edu
Fax (Geol):  301-314-9661       Fax (CPS-ELT): 301-405-0796