In the Late Cretaceous, the region of South America that would one day become modern Argentina was a dramatic land indeed. Teeming with dinosaur life, the Candeleros Formation - located in what is now ...

Tipping the scales at seven times as much as the dinosaur T. rex, it made the North American menace that also lived during the Cretaceous Period look puny.

Often considered the most iconic of the dinosaurs, the tyrannosaurus rex fossils already found make for a scary enough beast. But scientists think some might have been even bigger Comments News ...

Bigger than both T. rex and Gigantosaurus, it lived in the swamps and rivers of North Africa during the Cretaceous Period, about 112 million to 97 million years ago.

Monster dinosaur T-rex may have actually been 70% bigger than we think Often considered the most iconic of the dinosaurs, the tyrannosaurus rex fossils already found make for a scary enough beast.

Spinosaurus was even larger than Tyrannosaurus rex and measured 45 feet (13.7 meters) long. The colossus had an unusual skull shape that made it look more like a toothy crocodile than a raptor ...

“Nonavian dinosaurs dominated the world for 150 million years, but they never went into the water in a serious way,” Sereno said. “Of course, they could swim just like we do, but that doesn ...

Bigger than both T. rex and Gigantosaurus, it lived in the swamps and rivers of North Africa during the Cretaceous Period, about 112 million to 97 million years ago.