tyrannosaurs

About 90 million years ago, during the Cretaceous period, a gigantic dinosaur with 'shark-like' teeth prowled in present-day Uzbekistan, says a new study.…

About 90 million years ago, during the Cretaceous period, a gigantic dinosaur with 'shark-like' teeth prowled in present-day Uzbekistan, says a new study.…

The fearsome tyrannosaur dinosaurs that ruled the northern hemisphere during the Late Cretaceous period (66-100 million years ago) may not have been solitary…

Jack Tseng loves bone-crunching animals -- hyenas are his favorite -- so when paleontologist Joseph Peterson discovered fossilized dinosaur bones that had…