Montanoceratops, meaning “Montana horned face”, is a genus of ceratopsian dinosaur from the Maastrichtian age of the Late Cretaceous Period. It was discovered around 1916 by Barnum Brown at Buffalo Lake, Montana, USA in the St Mary River Formation. It was published as Leptoceratops in 1935 by Brown and his associate Erich M. Schlaikjer. Later evidence showed that this was an inaccurate description based on other findings and the name Montanoceratops was given. More material was found in the 90s and was published in 1998.
Montanoceratops was a herbivorous dinosaur with a parrot-like beak. It was about 10 feet long from head to tail. Though it lived in the late age of dinosaurs, it was still fairly primitive for a herbivore. It had clawed feet rather than hooves, and a toothed upper jaw rather than a toothless beak. It was once thought to have a horn on its nose, but this is no longer widely believed.