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 ...

In the Late Cretaceous, the region of South America that would one day become modern Argentina was a dramatic land indeed.

Giganotosaurus Time Period: Lived around 98–97 million years ago during the late Cretaceous, also earlier than T. rex. Diet: Likely preyed on large sauropods, including Argentinosaurus.

Philip Currie, who measured Giganotosaurus, said his calculations showed that the largest T. rex ever found was just 38.5 feet, meaning the academy’s dinosaur wins by a nose bone.

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.

Get it, girl! An ode to the T. rex, ... in “Jurassic World Dominion,” where the original beast from the first “Jurassic Park” faces fellow carnivore Giganotosaurus for all the marbles.