After Spencer & Benton, 2000, Spencer & Sues, 2000, Reisz & Scott, 2002, de Beaga, 2003, Modesto, Damiani, Neveling & Yates, 2003, and Cisneros, Damiani, Schultz, de Rosa, Schwanke, Neto & Aurélio, 2004

<==o †Procolophonoidea Romer, 1956
   |?- †Xenodiphyodon petraios Sues & Olsen, 1993
   |--o Owenettidae Broom, 1939
   |  |-- †Barasaurus besairei Piveteau, 1955
   |  |-- †Ruhuhuaria reiszi Tsuji, Sobral & Müller, 2013
   |  `--+-- †Owenetta rubidgei Broom, 1939 [Colubrifer campi Carroll, 1982]
   |     `--+-- †Saurodektes rogersorum (Modesto, Damiani, Neveling & Yates, 2003) Modesto, Damiani, Neveling & Yates, 2004 [Saurodectes rogersorum Modesto, Damiani, Neveling & Yates, 2003; nonSaurodectes Rasnitsyn & Zherikhin, 2000, a extinct louse (Insecta: Phthiriaptera)]
   |        `--+-- †Candelaria barbouri Price, 1946
   |           `-- †“Owenetta” kitchingorum Reisz & Scott, 2002
   `--o †Procolophonidae Cope, 1889 sensu Säilä, 2009 [non Seeley, 1888; non Lydekker, 1890] [incl. †Sclerosauridae]
      |-- †Coletta seca Gow, 2000
      |?- †Kinelia broomi Bulatov, 2002
      |-- †Pintosaurus magnidentis Piñeiro, Rojas & Ubilla, 2004
      `--+-- †Sauropareion anoplus Modesto, Sues & Damiani, 2001
         `--+-- †Gomphiosauridion baileyae Sues & Olsen, 1993
            |--o †Theledectinae Cisneros, 2008
            |  |-- †Theledectes perforatus (Gow, 1977) Modesto & Damiani, 2003 [Thelegnathus, in partim]
            |  `--o †Eumetabolodon Li, 1983 [Eumetabolodan Cisneros, 2008 (lapsus calami)]
            |     |?- †E. bathycephalus Li, 1983
            |     `-- †E. dongshengensis Li, 1983
            |?-o Spondylolestinae Ivakhnenko, 1979 [paraphyletic? assemblage of basal procolophonoids]
            |  |-- †Neoprocolophon asiaticus Young, 1957
            |  |-- †Phaanthosaurus ignatjevi Tchudinov & Vjuschkov, 1956
            |  |-- †Procolophonoides baini (Broom, 1905) Ivakhnenko, 1982 [Procolophon baini Broom, 1905; Procolophon trigoniceps Owen; Colbert & Kitching, 1975]
            |  `?- †Spondylolestes rubidgei Broom, 1937
            `--+--o †Contritosaurus Ivakhnenko, 1974 [paraphyletic Spondylolestinae]
               |  |-- †C. convector Ivakhnenko, 1974
               |  `-- †C. simus Ivakhnenko, 1974
               `--+--o †Tichvinskia Tchudinov & Vjuschkov, 1956
                  |  |-- †T. vjatkensis Tchudinov & Vjuschkov, 1956
                  |  `-- †T. jugensis Tchudinov & Vjuschkov, 1956
                  `--+--+-- †Koiloskiosaurus coburgensis v. Huene, 1913 [Koiliskiosaurus; Koiloskiosaurus koburgensis (lapsus calami?)]
                     |  `--+?-o †“Sclerosauridae” [treated as pareiasauroids by Lee (1995)]
                     |     |  |?- †Basileosaurus freyi Wiedersheim, 1879
                     |     |  `-- †Sclerosaurus armatus v. Meyer, 1859 [Aristodesmus]
                     |     `--+?- †Thelegnathus browni Broom, 1905 (nomen dubium sensu Modesto & Damiani, 2003)
                     |        |?- †Thelerpeton oppressus (Gow, 1977) Modesto & Damiani, 2003 [Thelegnathus, in partim]
                     |        |?- †Thelephon contritus (Gow, 1977) Modesto & Damiani, 2003 [Thelegnathus, in partim]
                     |        |?- †Teratophon spinigenis (Gow, 1977) Modesto & Damiani, 2003 [Thelegnathus, in partim]
                     |        `--o †Leptopleuroninae Ivakhnenko, 1979
                     |           |?- †Paoteodon huanghoensis Chow & Sin, 1960 (nomen dubium?)
                     |           |?- †Scoloparia glyphanodon Sues & Baird, 1998
                     |           |-- †Libognathus sheddi Small, 1997
                     |           `--o †Leptopleuronini
                     |              |-- †Hypsognathus fenneri Gilmore, 1928
                     |              `-- †Leptopleuron lacertinum Owen, 1851 [Telerpeton elginense Mantell, 1852]
                     `--o †Procolophoninae Lydekker, 1890 (non Seeley, 1888 emend. Romer, 1956) Ivakhnenko, 1979
                        |--o †Anomoiodon von Huene, 1939
                        |  |-- †A. liliensterni von Huene, 1939
                        |  |-- †A. huenei
                        |  `-- †A. krejcii
                        |-- †Burtensia burtensis (Otschev, 1958) Ivakhnenko 1975
                        |-- †Insulophon morachovskayae Novikov, 1992 [jr. synon. of Orenburgia bruma?]
                        |--o †Kapes Ivakhnenko, 1975 [?Macrophon, ?Orenburgia Ivakhnenko, 1975, Samaria Novikov, 1991, Lestanshoria Novikov, 1991]
                        |  |-- †K. amaenus Ivakhnenko, 1975
                        |  |-- †K. majmesculae (Otschev, 1968) [Tichvinskia majmesculae Otschev, 1968, Orenburgia majmesculae (Otschev, 1968)]
                        |  `-- †K. serotinus Novikov, 1991
                        |-- †Lestanshoria massiva Novikov, 1991 [jr. synon. of Orenburgia?]
                        |-- †Macrophon komiensis Ivakhnenko, 1975
                        |-- †Microthelodon parvus (Broom, 1936) Romer, 1966 [Thelegnathus parvus Broom, 1905]
                        |-- †Myocephalus crassidens Broom, 1936
                        |--o †Orenburgia Ivakhnenko, 1975
                        |  |-- †O. enigmatica (Tchudinov & Vjuschkov, 1956) [Tichvinskia enigmatica Tchudinov & Vjuschkov, 1956] 
                        |  `-- †O. bruma Ivakhnenko, 1983
                        |--o †Procolophon Owen, 1876
                        |  |-- †P. trigoniceps Owen, 1876 [P. minor Owen, 1876; P. griersoni Seeley, 1878; P. cuneiceps Seeley, 1878; P. laticeps Seeley, 1878; P. platyrhinus Seeley, 1905; P. sphenorhinus Seeley, 1905]
                        |  |-- †P. pricei Lavina, 1983
                        |  `-- †P. brasiliensis Cisneros & Schultz, 2002
                        |-- †Samaria concinna (Ivakhnenko, 1975) [Orenburgia concinna Ivakhnenko, 1975, Samaria Novikov, 1991]
                        |-- †Soturnia caliodon Cisneros & Schultz, 2003
                        `-- †Timanophon raridentatus Novikov, 1991

Procolophonoidea incertae sedis:

Acadiella psalidodon Sues & Baird, 1998
    †Colognathus obsurus Case, 1928
    †Estheriophagus chatangensis Novojilov, 1948
    †Haligonia bolodon Sues & Baird, 1998
    †MyognathusSantaisaurus yuani Koh, 1940
    †Suchonosaurus minimus Tverdokhlebova & Ivakhnenko, 1994 [a non-procolophonoid? (Cisneros, 2008)]
    †Vitalia grata Ivakhnenko, 1973 [a non-procolophonoid?]

After Cisneros, 2008 (fig. 4)

<==o †Procolophonidae
   |-- †Coletta seca
   |-- †Pintosaurus magnidentis
   |-- †Sauropareion anoplus
   `--+-- †Phaanthosaurus spp.
      `--+--o †Theledectinae
         |  |-- †Theledectes perforatus
         |  `-- †“Eumetabolodondongshengensis
         `--+-- †Tichvinskia vjatkensis
            `--+--o †Procolophoninae
               |  |--+-- †Timanophon raridentatus
               |  |  `--+-- †Kapes spp.
               |  |     `-- †Thelephon contritus
               |  `--+-- †Eumetabolodon bathycephalus
               |     `--+-- †Procolophon trigoniceps
               |        |-- †Thelerpeton oppressus
               |        `-- †Teratophon spinigenis
               `--o †Leptopleuroninae
                  |-- †Pentaedrusaurus ordosianus
                  `--+-- †Neoprocolophon asiaticus
                     `--+--+-- †Sclerosaurus armatus
                        |  `-- †Scoloparia glyphanodon
                        `--+-- †Leptopleuron lacertinum
                           `--+-- †Hypsognathus fenneri
                              `-- †Soturnia caliodon

Reference(s):

  • Cisneros, J. C., 2008: Phylogenetic relationships of procolophonid parareptiles with remarks on their geological record.
    –Journal of Systematic Palaeontology: Vol. 6, #3, pp. 345-366 [doi: 10.1017/S1477201907002350]

Reference(s):