as a node inside Procolophonia. In their 2012 publication, Tsuji et al. defined it as a monophyletic node containing "nycteroleters" (the family Nycteroleteridae) and "pareiasaurs" (in the superfamily Pareiasauroidea).

Nycteroleteridae

Nycteroleteridae is a family, commonly called "nycteroleters", classified in Pareiasauromorpha. The group includes the genera Emeroleter,