Giganotosaurus carolinii 

 The Giganotosaurus carolini lived 98 million years in South America it was 40 to 43 feet long. It weighed up to eight tons. Its name meant "Giant Southern Lizard." It hunted large dinosaurs like the Argentinosaurus. It was super-fast too; some scientists think it could run at 31 miles per hour! It lived in Argentina to be more exact. Its brain was smaller than that of the T.rex even though its skull was six feet long, plus it had super sharp teeth. We don't know if it hunted in packs or not, but it's likely it did due to Mapusaurus, a relative of Giganotosaurus, living in packs. Giganotosaurus's jaws were not very strong, but its teeth were like a shark's they were meant to slice into flesh and then let the large herbivores die. Giganotosaurus teeth were extremely sharp. The Giganotosaurus carolini was closely related to the Carnotaurus. It is important to know that it's bites were less powerful then that of the T.rex but they were not meant for crushing they were meant for slicing. It was larger than the t.rex and it was a apex predator where it lived. It lived 98 million years ago and went extinct before the T. rex ruled. 

We don't know if it hunted in packs or not, but it's likely it did because it was related to Mapusaurus who hunted in packs. Giganotosaurus's jaws were not very strong, but its teeth were like a shark's they were meant to slice into flesh and then let the large herbivores die. Giganotosaurus teeth were extremely sharp. The Giganotosaurus carolini was closely related to the Carnotaurus. It is important to know that it's bites were less powerful than that of the T.rex and they were not meant for crushing, they were meant for slicing. It was larger than the T. rex and it was a apex predator where it lived. It lived 98 million years ago and went extinct before the T.rex ruled.