Scylacosauria is a clade of therocephaliantherapsids. It includes the basalfamilyScylacosauridae and the infraorder Eutherocephalia. Scylacosauridae and Eutherocephalia form this clade to the exclusion of Lycosuchidae, the most basal therocephalian family. Thus, Scylacosauria includes all therocephalians except lycosuchids.[1] Below is a cladogram showing the phylogenetic position of Sylacosauria:
