Upon its original description Medusaceratops was thought to represent a chasmosaurine. It was suggested that based on its type material alone, Medusaceratops is unique among Chasmosaurinae in having only three epiparietals (frill spikes) on each side of the frill.
In its initial description, Medusaceratops was thought to be a chasmosaurine. It was suggested that based solely on its type material, Medusaceratops is distinctive within Chasmosaurinae for having only three epiparietals (frill spikes) on each side of the frill.