The Romocarasaurus Is A Big Carnivore Dinosaur From North - East Argentina In The Late - Cretaceous Period. This Dinosaur Is A Carcharodontosaurid And Is A Close Cousin To The Meraxes, Despite Looking Like An Abelisaurid. Facts: Fatty Neck ( resulting to slow head maneuvers ). Weak Legs ( resulting to slow speeds ). Overwhelmingly Strong Bite ( can crush bones like tin ) Somewhat Light - ish In Weight. Comically Short Arms Been Known To Take Down Sauropods. .