8. Futalognkosaurus
Also known as the Futalognkosaurus dukei, this dinosaur had a mass of around 42 tons. It was even heavier than most military tanks.
7. Elaltitan lilloi
This massive dinosaur was discovered in South America and had an estimated weight of around 47-48 tons. A fully grown adult would barely reach the half of this dinosaur’s leg. They were estimated to be 30 meters long from the top of the head to the end of their tail.
