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At 01:29 PM 2/1/98 -0600, firstname.lastname@example.org wrote:
>Say, what is the currently accepted relationship of Daspletosaurus?
>Seperate genus? Subgenus of Tyrannosaurus? Or, instead, subgenus of
Separate genus, but closer to Tyrannosaurus than to Albertosaurus or
>How many species in the genus? Just *torosus*?
Two or three: more on that later.
>possible that Trannosaurus itself became larger because of the seeming
>shift in the duckbill/ceratopsian ratio, and the resultant need to go after
>more dangerous prey?
Possibly, although T. bataar is quite large in an environment lacking
ceratopsids (although possessing titanosaurid sauropods!).
Thomas R. Holtz, Jr.
Vertebrate Paleontologist Webpage: http://www.geol.umd.edu
Dept. of Geology Email:email@example.com
University of Maryland Phone:301-405-4084
College Park, MD 20742 Fax: 301-314-9661