Out on the dry plains of Late Cretaceous South America, the large predatory dinosaur Meraxes gigas unleashes a loud territorial roar. Living between 97 and 93 million years ago, Meraxes would have been a smaller cousin of the earlier Giganotosaurus. As carcharodontosaurids, both would have had relatively short three-fingered forelimbs, but their main hunting weapons would have been their mouthfuls of bladelike teeth.