Argentinosaurus: The Colossal Titan Argentinosaurus, hailing from present-day Argentina, is widely regarded as the largest dinosaur ever ... in length and weighing 10 tons, its powerful jaws ...

Estimated at over 100 feet long and weighing up to 100 tons, this sauropod from Argentina is widely considered the largest dinosaur ever discovered. A close contender to Argentinosaurus ...