Mapusaurus roseae was a giant carnosaurian dinosaur from the Late Cretaceous of what is now Argentina. It was similar in size to its close relative Giganotosaurus, with the largest known specimens measuring over 12.2 meters (40 ft) in length. Mapusaurus belongs to the Carcharodontosauridae. Mapusaurus hunted in groups and worked together to take down large prey, such as the immense sauropod Argentinosaurus.
