Giganotosaurus dethroned Tyrannosaurus as the largest meat-eating dinosaur that ever lived when it was discovered in Patagonia in 1993.

Its skull alone is 5 feet (1.5 m) long. However, unlike Tyrannosaurus, it wasn't a fast runner because its tibia and femur are the same length.

Dino Facts

  • Pronounced: GEE-gah-no-toe-SORE-us
  • Means: Giant southern lizard
  • Size: 49.5 ft (15 m)
  • Where: South America (Argentina)
  • When: Middle Cretaceous
  • Diet: Carnivorous