After Lee, 1993, 1996, and 1997 (fig. 21), and Tsuji & Müller, 2009

<==o Pareiasauroidea Nopcsa, 1928
   |?-o †Sclerosauridae [maybe aberrant procolophonids (Sues & Baird, 1998, deBraga, 2003)]
   |  |?- †Basileosaurus freyi Wiedersheim, 1879
   |  `-- †Sclerosaurus armatus v. Meyer, 1859 [Aristodesmus]
   `--o Pareiasauria Seeley, 1888 [Pareiasauridae Cope, 1896 sensu lato]
      `==o †Bradysaurus Watson, 1914b [Brachypareia; Bradysuchus; Koalemasaurus; Platyoropha] [Bradysauridae von Huene, 1948] U.Perm.
         |?- †Bradysaurus rogersi (Broom, 1912) [Propappus rogersi Broom, 1912; Brachypareia rogersi (Broom, 1912); Bradysaurus rogersi (Broom, 1912); Pareiasaurus serridens Owen, 1876]
         |?- †Bradysaurus acutirostris [Koalemasaurus]
         |?- †Bradysaurus whaitsi
         |-- †Bradysaurus baini (Seeley, 1892) Watson, 1914b [Pareiasaurus baini Seeley, 1892; incl. Platyoropha broomi Haughton & Boonstra, 1929]
         `--+-- †“Bradysaurusseeleyi Haughton & Boonstra, 1929 [incl. Bradysaurus vanderbyli Haughton & Boonstra, 1929]
            `--o Velosauria Lee, 1994 sensu Lee, 1997
               |-- †Nochelosaurus alexandri Haughton & Boonstra, 1929 [Nochelesaurus (lapsus calami)] U.Perm.
               `--+-- †Embrithosaurus schwarzi Watson, 1914 [Dolichopareia, Nochelesaurus]
                  `--+-- †Bunostegos akokanensis Sidor, Blackburn & Gado, 2003; U.Perm. WCAf.
                     `--+-- †Deltavjatia vjatkensis (Hartmann-Weinberg, 1937) Lebedev in Ivakhnenko, 1987 [taxonomic history] U.Perm. EEu.
                        `--o Velosauria Lee, 1994 sensu Jalil & Janvier, 2005
                           `--o †Pareiasauridae Cope, 1896 sensu stricto? [incl. Elginiidae Cope, 1895]
                              |?- †Pareiasauria gen. et sp. indet. 1 [Argana Basin, Marocco] [Jalil & Janvier, 2005]
                              |?- †Pareiasauria gen. et sp. indet. 2 [Argana Basin, Marocco] [Jalil & Janvier, 2005]
                              |-- “Welgevonden pareiasaur”
                              `--+--+-- †Shansisaurus xuecunensis Cheng, 1980 [Huanghesaurus liulinensis Gao, 1983] U.Perm. EAs.
                                 |  `--+-- †Shihtienfenia permica Young & Yeh, 1963; U.Perm. CAs.
                                 |     `--o †Pareiasuchus Broom & Haughton, 1913; U.Perm. SAf.
                                 |        |-- †P. peringueyi Broom & Haughton, 1913
                                 |        `-- †P. nasicornis Haughton & Boonstra, 1929
                                 `--+-- †Sanchuansaurus pygmaeus Gao, 1989 (sedis mutabilis); U.Perm. CAs.
                                    |?- †Obirkovia gladiator Bulanov & Jashina, 2005
                                    |--o †Pareiasaurus Owen, 1876; U.Perm. [Pareiasuchus Lydekker, 1890; Propappus Seeley, 1888; ?Pareiasuchus Broom & Haughton, 1913]
                                    |  |?- †P. henneni Case, 1917
                                    |  |?- †P. pinnatus Olson & Broom, 1937
                                    |  |?- †P. russouwi Broom, 1913
                                    |  |?- †P. strubeni
                                    |  `-- †P. serridens Owen, 1876 [Propappus serridens (Owen, 1876); Propappus omocratus Seeley, 1888; Pareiasaurus omocratus (Seeley, 1888); Pareiasaurus minor Seeley, 1892; Anthodon gregoryi Broom, 1930; Propappus rogersi Broom, 1912; Brachypareia rogersi (Broom, 1912); Bradysaurus rogersi (Broom, 1912); Pareiasaurus pinnatus Olson & Broom, 1937; Pareiasaurus rubidgei Broom, 1940; Anthodon nesemanni Broom, 1940]
                                    `--+-- †Scutosaurus karpinskii (Amalitskii, 1922) Hartmann-Weinberg, 1930 [Amalitzkia; Proelginia permiana]; U.Perm. EEu.
                                       `--+-- †Arganaceras vacanti Jalil & Janvier, 2005; U.Perm. NWAf.
                                          |-- †Parasaurus geinitzi von Meyer, 1857 (non Marsh, 1885) U.Perm.
                                          |-- “Kupferschiefer pareiasaur”; U.Perm.
                                          |--o †Elginia Newton, 1893; U.Perm. WEu.
                                          |   |?- †E. gordoni
                                          |   `-- †E. mirabilis Newton, 1893
                                          `--o Pumiliopareiasauria Lee
                                             |-- †Nanoparia luckhoffi Broom, 1936 [Nanopareia (lapsus calami)]; U.Perm.
                                             |-- †Provelosaurus americanus (Araújo, 1985) [Pareiasaurus americanus Araújo, 1985] U.Perm. SAm.
                                             `--+--o †Anthodon Owen, 1876; U.Perm.
                                                |  |?- †A. gregoryi Broom, 1930 [=? Pareiasaurus serridens Owen, 1876]
                                                |  `-- †A. serrarius Owen, 1876
                                                `-- †Pumilopareia pricei Broom & Robinson, 1948 [“Nanoparia” pricei]; U.Perm.

After Tsuji et al., 2013

<==o Pareiasauria
   |-- †“Bradysaurusseeleyi
   `--+-- †Nochelesaurus
      |-- †Bradysaurus baini
      `--+-- †Embrithosaurus
         `--+-- †Bunostegos
            `--+--+-- †Deltavjatia
               |  `-- †Parasaurus
               `--o Velosauria
                  |--o Pumiliopareiasauria
                  |  |-- †Nanoparia
                  |  |-- †Provelosaurus
                  |  `--+-- †Anthodon
                  |     `-- †Pumilopareia
                  `--o †Pareiasauridae
                     |--+-- †Shansisaurus
                     |  `--+-- †Shihtienfenia
                     |     `-- †Pareiasuchus
                     `--+-- †Sanchuansaurus
                        |-- †Pareiasaurus
                        |-- †Scutosaurus
                        |-- †Arganaceras
                        |-- †Obirkovia
                        `-- †Elginia

Reference(s):

  • Tsuji, L. A., Sidor, C. A., Steyer, J. S., Smith, R. M. H., Tabor, N. J. & Ide, O., 2013: The vertebrate fauna of the Upper Permian of Niger — VII. Cranial anatomy and relationships of Bunostegos akokanensis (Pareiasauria).
    –Journal of Vertebrate Paleontology: Vol. 33, #4, pp. 747-763 [doi: 10.1080/02724634.2013.739537]

After Lee, 1993, 1996, and 1997 (fig. 21), and Jalil & Janvier, 2005

<==o Hallucicrania
   |?-o †Lathanosuchoidea
   |  |--o †Acleistorhinidae
   |  |  |-- †Colobomycter
   |  |  `-- †Acleistorhinus
   |  `--o †Lanthanosuchidae
   |     |-- †Chalcosaurus
   |     |-- †Lanthaniscus
   |     `-- †Lanthanosuchus
   `--o Pareiasauroidea
      |?-o †Sclerosauridae
      |  |?- †Basileosaurus
      |  `-- †Sclerosaurus
      `--o Pareiasauria
         |-- †“Bradysaurusseeleyi
         `--+-- †Bradysaurus baini
            `--o Velosauria
               |-- †Nochelesaurus
               `--+-- †Embrithosaurus
                  `--+-- †Bunostegos
                     `--+-- †Deltavjatia
                        `--o Velosauria
                           |--o †Pareiasauridae
                           |  |--+-- †Shansisaurus
                           |  |  `--+-- †Shihtienfenia
                           |  |     `-- †Pareiasuchus
                           |  `--+?- †Sanchuansaurus (sedis mutabilis)
                           |     |-- †Pareiasaurus
                           |     `--+-- †Scutosaurus
                           |        `--+-- †Arganaceras
                           |           |-- †Parasaurus
                           |           |-- “Kupferschiefer pareiasaur”
                           |           `-- †Elginia
                           `--+-- †Pareiasauria gen. et sp. indet. 1 [Argana Basin, Marocco] [Jalil & Janvier, 2005]
                              `--o Pumiliopareiasauria
                                 |?- †Nanoparia
                                 |-- †Provelosaurus
                                 `--+-- †Anthodon
                                    `--+-- †Pumilopareia
                                       `-- Chelonia

Reference(s):