Gigaeroraptor

Gigaeroraptor (Gigaeroraptor ultis) is a species of Dromaeosaur-grouped raptor dinosaur that lived in what is now North America and South America during the Late Cretaceous period (around 73-66 mya). It probably evolved from groups of Achillobators that had spread into North America from Asia. Unlike common Velociraptor, Gigaeroraptors lack feathers and have pronated clawed hands, proto-feather like quills on their backs and they are about twice the size of Arid Velociraptors (about slightly smaller than yjr Jurassic Park/World Velociraptors). They were the much larger, more intelligent, and more aggressive rivals to the Montanoraptors who they coexisted with. They are carnivorous and can prey on anything as large as a Gigantohetrus. They're known to kill young Tyrannosaurs to end the competition or food.