Giganotocarnotaurus

Giganotocarnotaurus was a species of Abelisaurid that lived in what is now Argentina during the Late Cretaceous from 95 million years ago to 66 million years ago, with Aurocarnotaurus being a possible species of Giganotocarnotaurus. It was most likely very Carnotaurus-like, hence their name as their fossils showed, although they were much builker, larger, and not as skinny as their smaller relative and neighbor, the Carnotaurus. Since it had thick leg bones, this suggests that it was a strong runner and was able to hunt Gigantohetrus, Cerasaurus, and Iguanodonts in high speeds up to about 35 miles per hour. It was the largest ever Abelisaurids and among the biggest theropods, growing about 50 feet long. It was the top predator of its landscape after the extinction of Carnosaurs of South America, so to fill their niche, a group of Abelisaurids grew much larger and builker, becoming more predatory than their ancestors. They were not able to survive the mass extinction at the End of the Age of Dinosaurs for some reason.