PHILADELPHIA — Giganotosaurus may not be as giganto as thought. The Academy of Natural Sciences has touted its new celebrity dinosaur as the biggest meat-eater ever discovered. Originally ...

Such a scenario would never have actually happened. T. rex and Giganotosaurus did not live at the same time, in the same place, or even in the same environment. Both theropod dinosaurs roamed the ...

Calculating mass from fossils is notoriously difficult, and a more recent estimate published in 2007 in the Journal of Vertebrate Paleontology suggests Giganotosaurus weighed up to 15 tons (13.8 ...

Millions of years ago, the largest dinosaurs rumbled through the steamy jungles of northern Patagonia. Now a desert of bleak mountains and blistering heat, the remote South American region is ...

A good example, Mallon added, is Giganotosaurus—a big meat-eating dinosaur whose fossils have been unearthed in Argentina, and which is often touted as having been larger than T. rex.

For example, the Giganotosaurus fossil unearthed in Argentina is thought to be 10 million years older than the Argentinosaurus specimen. “However, ...

For decades, scientists believed that carcharodontosaurs—giant carnivores related to Giganotosaurus—dominated the top of the ...

Fossil from Utah was the apex predator of its day—100 million years ago. ... given that another of the carcharodontosaurs found in Argentina has been named Giganotosaurus due to its enormous size.