Sauropareion anoplus (Modesto, Sues and Damiani 2001) earliest Triassic, ~3 cm skull length, was considered a procolophonoid, but it is not closely related to Procolophon. Derived from a sister to Macroleter and Nyctiphruretus, Sauropareion phylogenetically preceded Owenetta, Candelaria and after those, the basal lepidosauriform, Paliguana. Thus, Sauropareion leads us closer to the base of the Lepidosauria.
Distinct from Macroleter and Nyctiphruretus, the skull of Sauropareion emphasized the dorsal process of the quadratojugal so that it broadly contacted the jugal above the lateral temporal fenestra while simultaneously deleting the lower temporal bar. This is a big change facilitated by the earlier appearance of the dorsal process of the quadratojugal in Macroleter above its tiny lateral temporal fenestra. The posterior skull was lower, narrower and shorter as the orbit was relatively larger. The mandible included a retroarticular process.