Monoclonius longirostris Dinosaur: Monoclonius longirostris Period Details Status: S > Centrosaurus apertus Author: Kuhn Year: 1964 Distribution Classification Sources References: Kuhn, O., (1964), Ornithischia: Fossilium Catalogus I, Animalia. ________________________ Please Support the Dinosaur Database: Facebook Twitter LinkedIn Tumblr VKontakte Odnoklassniki Pocket Skype Messenger Messenger WhatsApp Telegram Viber Line Share via Email