梅杜莎角龙的名称最早在克里夫兰自然史博物馆的加拿大古生物学家麦可·J·莱恩(Michael J. Ryan)2003年的论文中提出。其化石后来与另一种同样来自亚伯达的尖角龙亚科、由莱恩于2007年叙述的亚伯达角龙混淆。后来莱恩意识到曼斯菲尔德骨床材料不属于亚伯达角龙。2010年,莱恩、安东尼·P·鲁索(Anthony P. Russell)、史考特·哈特曼(Scott Hartman)正式叙述了模式种洛基梅杜莎角龙(Medusaceratops lokii);属名取自希腊神话的蛇发女妖梅杜莎,来象征该属特殊、粗大的蛇状尖刺延伸到褶饰侧边;种名取自北欧神话的麻烦制造神洛基,意指多年来曼斯菲尔德骨床材料在得到自己的名称之前一直混淆著分类学。[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.