Dino hips discovery unravels species riddle
(PHYSorg.com Archaeology & Fossils)

New research from University of Alberta paleontologists shows one of North America`s most broadly identified dinosaur species, Troodon formosus, is no longer a valid classification, naming two others in its stead. The discovery by graduate student Aaron van der Reest leaves North America`s paleontology community in upheaval.