TINY "T. REX" PICTURES: New Dinosaur Species Found

TINY ''T. REX'' PICTURES: New Dinosaur Species Found
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September 17, 2009--Sure it's pretty scary--beady eyes and all--but 125-million-year-old Raptorex kriegsteini (seen above in a new model) was no T. rex, at least in the size department. The newfound, 150-pound (70-kilogram) dinosaur, however, was nearly identical to its descendant, the 6-ton T. rex in every other way, a new study says. (Read full story.)

That Raptorex, via evolution, "scaled up, almost without change, a hundred times," resulting in T. rex some 40 million years later is an "evolutionarily staggering thing," said paleontologist Paul Sereno, lead author of the study, to be published in the journal Science tomorrow.

--With reporting by Rebecca Carroll
— Photograph courtesy Mike Hettwer
 
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