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Say, what is the currently accepted relationship of Daspletosaurus?
Seperate genus? Subgenus of Tyrannosaurus? Or, instead, subgenus of
Albertosaurus? How many species in the genus? Just *torosus*? And--is it
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?
Seth A. Ellestad.