†Parareptilia Olson 1947 [deBraga & Reisz 1996] see Subclass Parareptilia Olson, 1947
   †Procolophonidae Lydekker 1889 [Laurin & Reisz 1995] see Family Procolophonidae Lydekker, 1889
     †"horned procolophonids"
       †Leptopleuroninae Ivakhnenko 1979 [Modesto et al. 2002] see Subfamily Leptopleuroninae Ivakhnenko, 1979
         1 Genus †Pentaedrusaurus Li, 1989 [monotypic]
         2.1 Genus †Neoprocolophon Young, 1957 [monotypic]
         2.2.1.1 Genus †Sclerosaurus Meyer, 1857 [monotypic]
         2.2.1.2 Genus †Scoloparia Sues & Baird, 1998 [monotypic]
         2.2.2.1 Genus †Leptopleuron Owen, 1851 [monotypic]
         2.2.2.2.1 Genus †Hypsognathus Gilmore, 1928 [monotypic]
         2.2.2.2.2 Genus †Soturnia Cisneros & Schultz, 2003 [monotypic]