Fossil hunters in Patagonia have unearthed the remains of more than a half-dozen gigantic dinosaurs that appear to have lived and hunted in a pack. Mapusaurus roseae was bigger than Tyrannosaurus rex ...

Scientists are learning more about what appears to be one of the biggest meat-eating dinosaurs known, a two-legged beast whose bones were found several years ago in the fossil-rich Patagonia region of ...

Meet Mapusaurus roseae, the largest carnivore on Earth recorded to date. Paleontologists working in the Patagonian wilderness in Argentina who found the remains of the 41-foot long and 15,000-pound ...

At a news conference in the western Patagonian city where the news species was found, paleontologists have unveiled what may be one of the largest carnivorous dinosaurs known -- Mapusaurus roseae.

NEW YORK – Scientists are learning more about what appears to be one of the biggest meat-eating dinosaurs known, a two-legged beast whose bones were found several years ago in the fossil-rich ...

April 17, 2006 — -- Move over, Tyrannosaurus Rex. There's a new dinosaur in town, and he's bigger and badder than you ever were. A ferocious meat-eater named Mapusaurus roseae and weighing almost ...

The fossilized remains of what may be the largest meat-eating dinosaur has been discovered in Argentina -- a bus-sized monster that attacked its prey in roving packs, scientists announced Monday. The ...

Giant predatory dinosaurs may have hunted in packs to bring down the biggest plant-eating prey. The evidence comes from the first detailed analysis of the remains of giant predatory dinosaurs ...