Brill & Carpenter 2007. A description of a new ornithopod from the Lytle Member of the Purgatoire Formation (Lower Cretaceous) and a reassessment of the skull of Camptosaurus. Carpenter, Kenneth[Ed]. Horns and beaks: ceratopsian and ornithopod dinosaurs. [Life of the Past.], Indiana University Press, Bloomington, 2007: i-xi, 1-367. Chapter pagination: 49-67