article_snippet.sent: The skeleton of a new species of giant predatory bird that terrorised the Earth 3.5 million years ago has been discovered and is helping to reveal how these creatures would have sounded.
article_snippet.sent: Palaeontologists say the four feet (1.2 metres) tall bird is  the most complete skeletons of a 'terror bird' - a group of flightless prehistoric meat-eating birds - to be discovered.
article_snippet.sent: A giant prehistoric ‘terror bird’ - once thought to have been a ruthless predator which snapped the necks of mammals with its enormous beak - was actually a vegetarian, according to one study.
article_snippet.sent: Also, the bird’s sheer size and inability to move fast made some believe it couldn’t have preyed on early mammals - though others claim it might have ambushed others.
article_snippet.sent: Terror birds, or phorusracids as they are also known, were a group of carnivorous birds that grew up to 10 feet tall and had large hooked beaks.
article_snippet.sent: a group of carnivorous birds that grew up to 10 feet tall and had large hooked beaks were the dominant predators in South America during the Cenozoic age which started with the extinction of the dinosaurs 65 million years ago.
article_snippet.sent: The discovery of this species will allow we to review the hypothesis about the decline and extinction of this fascinating group of birds.'
highlights_snippet.sent: The four feet tall species of terror bird was discovered in a crumpling cliff on a beach close to Mar del Plata city .
  
highlights_snippet.sent: Palaeontologists say it is the most complete terror bird skeleton ever found .
  