Horrible but True Natural World Dangerous Waters Hunters and Hunted Weird Plants Prehistoric Life Natural Disasters History Exploration Unusual Events	Bighead! The skull and neck frill of Torosaurus, or 'piercing lizard' were over 2 metres long and weighed 1.9 tons. The skull of a Torosaurus   Previous: Back Book: Horrible but True Section: Natural World Chapter: Prehistoric Life