T. rex body plan debuted in Raptorex, but 100th the size
Thursday, September 17, 2009 - 16:07
in Paleontology & Archaeology
A 9-foot dinosaur from northeastern China had evolved all the hallmark anatomical features of Tyrannosaurus rex at least 125 million years ago. University of Chicago paleontologist Paul Sereno and five co-authors describe the newly discovered dinosaur in the Sept. 17 Science Express, advanced online edition of the journal Science.