Medusaceratops is a genus of ceratopsian dinosaur from the Upper Cretaceous epoch of North America. It was a fairly large species, reaching up to 6 meters in length and weighing about 2.200 kg! Medusaceratops had typical spikes on top of its frill; the first two spikes on both side were large and pointed downwards. Further down, the spikes became smaller.
The genus of Medusaceratops consists of just a singular species: M. lokii. Fossils of this species have been found in the Northern USA in 2001 and the fossil evidence contains mainly the upper parts of the frill. Still, the family in which Medusaceratops should be placed is discussed. Some say it belongs to the Centrosaurine ceratopsids, while other say it belongs to the Chasmosaurine ceratopsids.
Ryan et al. 2010
Chiba, K., Ryan, M. J., Fanti, F., Loewen, M. A., & Evans, D. C. (2018). New material and systematic re-evaluation of Medusaceratops lokii (Dinosauria, Ceratopsidae) from the Judith River Formation (Campanian, Montana). Journal of Paleontology, 92(2), 272-288.