梅杜莎角龍的名稱最早在克里夫蘭自然史博物館的加拿大古生物學家麥可·J·萊恩(Michael J. Ryan)2003年的論文中提出。其化石後來與另一種同樣來自亞伯達的尖角龍亞科、由萊恩於2007年敘述的亞伯達角龍混淆。後來萊恩意識到曼斯菲爾德骨床材料不屬於亞伯達角龍。2010年,萊恩、安東尼·P·魯索(Anthony P. Russell)、史考特·哈特曼(Scott Hartman)正式敘述了模式種洛基梅杜莎角龍(Medusaceratops lokii);屬名取自希臘神話的蛇髮女妖梅杜莎,來象徵該屬特殊、粗大的蛇狀尖刺延伸到褶飾側邊;種名取自北歐神話的麻煩製造神洛基,意指多年來曼斯菲爾德骨床材料在得到自己的名稱之前一直混淆著分類學。[1]
^ 1.01.11.21.31.41.51.6Ryan, Michael J.; Russell, Anthony P., and Hartman, Scott. (2010). "A New Chasmosaurine Ceratopsid from the Judith River Formation, Montana", In: Michael J. Ryan, Brenda J. Chinnery-Allgeier, and David A. Eberth (eds), New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium, Indiana University Press, 656 pp. ISBN0-253-35358-0.
^Longrich, N. R. Judiceratops tigris, a New Horned Dinosaur from the Middle Campanian Judith River Formation of Montana. Bulletin of the Peabody Museum of Natural History. 2013, 54: 51–65. doi:10.3374/014.054.0103.
^ 3.03.13.23.33.43.53.6Kentaro Chiba; Michael J. Ryan; Federico Fanti; Mark A. Loewen; David C. Evans. New material and systematic re-evaluation of Medusaceratops lokii (Dinosauria, Ceratopsidae) from the Judith River Formation (Campanian, Montana). Journal of Paleontology. 2018,. in press. doi:10.1017/jpa.2017.62.
^Ryan, M. J.; Evans, D. C.; Currie, P. J.; Loewen, M. A. A new chasmosaurine from northern Laramidia expands frill disparity in ceratopsid dinosaurs. Naturwissenschaften. 2014, 101: 505–512. PMID 24859020. doi:10.1007/s00114-014-1183-1.