Torosaurus was a large ceratopsian dinosaur that lived on the North American in the Cretaceous. Like with others of its kind, Torosaurus was a herbivore cropping low growing vegetation and may have lived in social groups. Torosaurus ha one of the largest skulls of any dinosaur. Most of this is physical length formed by the neck frill which grows out from the back of the skull, which covers the neck but was almost certainly for display and defense.
Name: Torosaurus (Perforated lizard).
Size: Roughly about 7.5-7.6 meters long.
Known locations: Canada, Alberta - Scollard Formation, Saskatchewan - Frenchman Formation. USA, Colorado - Laramie Formation, North Dakota - Hell Creek Formation, South Dakota - Hell Creek Formation, Texas - Javelina Formation, Utah - North Horn Formation, Wyoming Lance Formation.
Time period: Late Cretaceous 66 million years ago