Monoclonius is a genus of ceratopsian that lived during the Late Cretaceous period in what is now North America.
Ka-Zar of Prehistoria[]
Monoclonius are often called Butos by primitive cavemen tribes throughout the prehistoric world of Prehistoria. These ceratopsians thrive through most environments in Prehistoria and rarely go to the tundras of Zanthodon further up north.