Plaza Huincul is a gloomy oil town with a reputation for political protest, but its paleontological museum exhibits the partial skeleton of the biggest dinosaur ever to thunder across Earth.

BBC: The dinosaur route of northwest Patagonia

Philip Currie of the University of Alberta in Canada speculated that pack hunting could have allowed Mapusaurs to prey on the biggest known dinosaur, Argentinasaurus, a 37.5m-long (125ft) plant-eater.

BBC: NEWS | Science/Nature | Dino may have been pack hunter