After Huttenlocker, 2009, and Huttenlocker, 2014, with taxonomic information from Carroll, 1988, Battail & Surkov, 2000, (partially) Botha, Abdala & Smith, 2007, and Ivakhnenko, 2011

<==o †Therocephalia Broom, 1903 [paraphyletic]
   |--o †Lycosuchia Nopcsa, 1923 [Lycosuchida sensu Ivachnenko, 2011]
   |  |--o †Perplexisaurus Tatarinov, 1997 [Perplexisauroidea Tatarinov, 2000: Perplexisauridae Tatarinov, 2000]
   |  |  |-- †P. foveatus Tatarinov, 1997 [?Chlynovia serridentatus Tatarinov, 2000]
   |  |  `-- †P. lepusculus Ivakhnenko, 2011
   |  `--o †Lycosuchoidea Nopcsa, 1923 sensu Ivachnenko, 2011
   |     |-- †Kotelcephalon viatkensis Tatarinov, 1999 [Kotelcephalonidae Ivachnenko, 2011]
   |     `--o †Lycosuchidae Nopcsa, 1923 [Simorhinellidae]
   |        |?- †Scymnosaurus ferox Broom 1903
   |        |-- †Porosteugnathus efremovi Vjuschkov, 1955
   |        |-- †Simorhinella baini Broom, 1915; M.Perm. SAf. [Simorhinellidae]
   |        `--o †Lycosuchus Broom, 1903
   |           |-- †L. vanderrieti Broom, 1903
   |           |?- †L. mackayi Broom, 1903
   |           `?- †L. kayseri van der Heever, 1987 [nomen nudum]
   `--o †Scylacosauria Broom, 1903 [Pristerosauria Hopson & Berghusen, 1986 in partim]
      |?-o †Trochosuchidae Watson & Romer, 1956 [=? Lycosuchidae?]
      |  |--o †Hyaenasuchus Broom, 1908
      |  |  `-- †H. whaitsi Broom 1908
      |  |-- †Trochorhinus Broom, 1936
      |  |--o †Trochosaurus Broom, 1935
      |  |  |-- T. dirus Broom, 1935
      |  |  `-- T. acutus (Broom, 1908) [Trochosuchus acutus Broom, 1908]
      |  `-- †Trochosuchus Broom, 1908
      |--o Scylacosauridae Broom, 1903 [incl. Pristerognathidae Broom, 1908]
      |  |?- †Alopecideops Broom, 1932
      |  |?- †Alopecodon priscus Broom, 1908
      |  |?-o †Alopecognathus Broom, 1915
      |  |  |-- †A. angusticeps Broom, 1915
      |  |  |-- †A. angustioriceps  Boonstra, 1953
      |  |  |-- †A. megalops  Broom, 1935
      |  |  `-- †A. minor  Haughton, 1918
      |  |?- †Alopecorhinus Broom, 1912
      |  |?- †Cynariognathus Broom, 1931
      |  |?- ?†Hyorhynchus Seeley, 1889
      |  |?- †Hexacynodon purlinensis Tatarinov, 1974
      |  |?- †Ictidoparia Broom, 1925
      |  |?- †Lycedops Broom, 1935 [Lycidopsidae Boonstra, 1934]
      |  |?- †Maraisaurus Boonstra, 1953
      |  |?- †Pardosuchus whaitsi Broom, 1908
      |  |?- †Pristerognathoides Boonstra, 1954
      |  |?- †Pristerosaurus Boonstra, 1954
      |  |?- †Ptomalestes Boonstra, 1954
      |  |?- †Scylacoides Broom, 1915
      |  |?- †Scylacorhinus Broom, 1915
      |  |?-o †Scylacosaurus Broom, 1903
      |  |  |-- †S. sclateri Tatarinov, 1968
      |  |  `-- †S. orenburgensis
      |  |?- †Scymnosaurus watsoni Broom, 1903
      |  |?- †Therioides Boonstra, 1953
      |  |?- †Walteria skinneri Brink & Kitching, 1951
      |  |?- †Zinnosaurus paucidens Boonstra, 1968
      |  |-- †Ictidosaurus angusticeps Broom, 1903b [non? Broom, 1908] M.Perm. SAf.
      |  `--+-- †Glanosuchus macrops Broom, 1904; M.Perm. SAf.
      |     `--o †Pristerognathus Seeley, 1895
      |        |-- †P. baini
      |        |-- †P. polyodon
      |        |?- †P. platyrhinus
      |        `?- †P. vanderbyli
      `--o †Eutherocephalia Hopson & Berghusen, 1986 [incl.? Scaloposauria Boonstra, 1953]
         |-- †Stylacosuchus orenburgensis Tatarinov, 1968 [Scylacosuchidae Ivachnenko, 2011]
         `==o †Whaitsioidea Tatarinov, 1995 [paraphyletic]
            |--o †Akidnognathidae (Nopsca, 1928) Haughton " Brick 1954 [Akidognathinae (sic) Nopsca, 1928; Euchambersidae (sic) Boonstra, 1934; Euchambersiidae v. Huene, 1940; Moschorhinidae Brick, 1959]
            |  |--o †Annatherapsinae Kuhn, 1961 [not treated by Huttenlocker, 2009]
            |  |  |--o †Annatherapsidus Kuhn, 1961 [Anna Amalitskii, 1922; Annatherapsidus Kuhn, 1961]
            |  |  |  |-- †A. petri (Amalitskii, 1922) [Anna petri Amalitskii, 1922]
            |  |  |  `-- †A. postum Ivachnenko, 2011
            |  |  `?- †Chthonosaurus velocidens Vjuschkov, 1955
            |  `--+-- USNM 412421
            |     `--+-- †Akidnognathus parvus Haughton, 1918 [non Brink, 1960]
            |        `--+--+-- †Promoschorhynchus platyrhinus Brink, 1954
            |           |  `-- †Olivierosuchus parringtoni Brink, 1965 [Oliveria parringtoni; Moschorhinus (in partim)]
            |           `--+-- †Euchambersia mirabilis Broom, 1931 [Euchambersiidae Boonstra, 1934; Euchambersiinae Boonstra, 1934]
            |              `--+-- †Cerdosuchoides brevidens Broom, 1936
            |                 `-- †Moschorhinus kitchingi Broom, 1920 [?Tigisuchus; Cerdops; Hewittia] [Moschorhininae]
            `--+--o “non-Akidnognathid whaitsioids”
               |  |--o ?†Hofmeyriidae
               |  |  |?- †Gorochovetzia sennikovi Ivachnenko, 2011
               |  |  |-- SAM-PK-K8516
               |  |  `--+-- †Hofmeyria atavus Broom, 1935
               |  |     `--+-- †Mirotenthes digitipes Attridge, 1956
               |  |        `--o †Ictidostoma [Ictidognathus]
               |  |           |-- †I. hemburyi [Ictidognathus]
               |  |           `-- †I. parvidens [Ictidognathus]
               |  `--o ?†Whaitsiidae Haughton, 1918
               |     |?- †Megawhaitsia patrichae Ivakhnenko, 2008
               |     |-- †Ictidochampsa platyceps Broom, 1948
               |     `==o †“Moschowhaitsiinae” Tatarinov, 1963
               |        |-- †Viatkosuchus sumini Tatarinov, 1995
               |        `--+-- †Moschowhaitsia vjuschkovi Tatarinov, 1963 [Hexacynodon purlinensis Tatarinov, 1974 (in partim)]
               |           `--o †Whaitsiinae Haughton, 1918
               |              `--o †Theriognathus Owen, 1876 [Alopecopsis Broom, 1920; Aneugomphius Broom & Robinson, 1948; Hyenosaurus Broom, 1935; Notaelurops Broom, 1936; Notosollasia Broom, 1925; Whaitsia Haughton, 1918]
               |                 |-- †T. microps Owen, 1876
               |                 |-- †T. laticeps (Broom, 1925) [Notosollasia laticeps]
               |                 `-- †T. major (Broom, 1920) [Whaitsia major Broom, 1920]
               `--o †Baurioidea Broom, 1911 [Ictidosuchoidea; Bauriamorpha Watson & Romer, 1956; Ictidosauria Boonstra 1972]
                  |?- †Dongusaurus schepetovi Vjuschkov, 1964
                  |?- †Homodontosaurus kitchingi Broom, 1949
                  |?- †Icticephalus polycynodon Broom, 1915
                  |?- †Ictidodon agilis Broom, 1925
                  |?- †Ictidognathus parvidens Broom, 1911
                  |?- †Macroscelesaurus janseni Haughton, 1918 [Haughtoniscus Kuhn, 1934]
                  |?- †Nanictocephalus richardi Broom, 1940; U. Perm. SAf. [Nanicticephalus (lapsus calami)]
                  |?- †Nanictosuchus
                  |?- †Polycynodon elegans (Broom, 1940) Broom & Robinson, 1948 [Octocynodon elegans Broom, 1940]
                  |?- †Scalopodon tenuisfrons Tatarinov, 1999
                  |?- †Scalopolacerta hoffmani [Scaloposaurus hoffmani] L. Trias. SAf.
                  |?- †Rhigosaurus glacialis Colbert & Kitching, 1981; L.Trias. Ant.
                  |?- †Zorillodontops gracilis Cluver, 1969; L. Trias. SAf.
                  |?- †Yikezhaogia megafenestrala Li, 1984
                  |?-o †Silpholestidae Watson & Romer, 1956 [not recognized by Huttenlocker]
                  |  |-- †Ictidodraco longiceps Broom & Robinson, 1948
                  |  |-- †Silphictidoides ruhuhuensis Huene, 1950
                  |  `-- †Silpholestes jackae Broom, 1948
                  |--o †Ictidosuchidae Broom, 1903 [incl.? Nanictidopsidae Watson & Romer, 1956; Ictidosuchopsidae Hopson & Berghusen, 1986]
                  |  |?- †Blattoidealestes gracilis Boonstra, 1954
                  |  |?- †Chlynovia serridentatus Tatarinov, 2000
                  |  |?- †Malasaurus germanus Tatarinov, 2001 [Tetracynodontinae Ivachnenko, 2011]
                  |  |?- ?†Muchia microdenta Ivakhnenko, 2011 [Tetracynodontinae Ivachnenko, 2011]
                  |  |?- †Nanictidops Broom, 1940; U.Perm. SAf. [=? Nanictosaurus??] [Nanictodopsidae Watson & Romer, 1956]
                  |  |?- †Pelictosuchus Broom, 1940
                  |  |?- †Purlovia maxima Ivachnenko, 2011 [Hexacynodon purlinensis Tatarinov, 1994a (in partim)]
                  |  |?- †Scalopodontes kotelnichi Tatarinov, 2000
                  |  |-- †Ictidosuchoides longiceps Broom, 1931 [non? Broom, 1940]
                  |  `--o †Ictidosuchus Broom, 1900 [non? Broom, 1931]
                  |     |-- †I. angusticeps
                  |     `-- †I. primaevus
                  `--+-- †Ictidosuchops intermedius (Crompton, 1955) Broom, 1938 [Ictidosuchoides intermedius]
                     `--+--o †Regisauridae
                        |  |-- †Regisaurus jacobi Mendrez, 1972; L.Trias. SAf.
                        |  `?- †Urumchia lii Young, 1952
                        `--+--+--o †Karenitidae Tatarinov, 1997
                           |  |  |-- NHCC LB44
                           |  |  |?- ?†Scaloporhinus Boonstra, 1953
                           |  |  `-- †Karenites ornamentatus Tatarinov, 1995 [Scalopodon tenuisfrons Tatarinov, 1999 (in partim)]
                           |  `--o †Lycideopidae Broom, 1931 [non? Boonstra, 1934] [incl.? Tetracynodontinae Ivachnenko, 2011]
                           |     |-- †Lycideops longiceps Broom, 1931
                           |     `--+-- †Choerosaurus dejageri Haughton, 1929
                           |        `--o †Tetracynodon Broom & Robinson, 1948 [?Homodontosaurus Broo, 1949]  U. Perm. L. Trias. SAf.
                           |           |-- †T. tenuis Broom & Robinson, 1948 [Homodontosaurus kitchingi Broom, 1949]
                           |           `-- †T. darti (Sigogneau 1963)
                           `--+--o †Scaloposauridae Haughton, 1924 [non? Broom, 1914] [Scaleposauridae lapsus calami]
                              |  |?- †Choerosaurus Haughton, 1929
                              |  |?- ?†Homodontosaurus Broom, 1949
                              |  |?- †Icticephalus Broom, 1915
                              |  |?- †Ictidodon Broom, 1925
                              |  |?- ?†Nanictocephalus Broom, 1940
                              |  |?- †Scalopocephalus Huene, 1938
                              |  |-- †Scaloposaurus constrictus Owen, 1876; U. Perm. SAf.
                              |  |-- †Scalopolacerta Mendrez & Carroll, 1979
                              |  |?- †Silphedestes Broom, 1949
                              |  `?- †Silphedocynodon Brink, 1951).
                              `--+--o †Ericolacertidae [treated as Scaloposaurids by Colbert & Kitching (1981)]
                                 |  |?- ?†Cyrbasiodon Broom, 1931
                                 |  |?- †Pedaeosaurus parvus Colbert & Kitching, 1981; L.Trias. Ant.
                                 |  |-- †Silphedosuchus orenburgensis Tatarinov, 1977
                                 |  `-- †Ericiolacerta parva Watson, 1931; L.Trias. SAf. Ant.
                                 `--+?- †Scapolognathus multituberculatus Tatarinov, 1974 [Scalopognathidae Tatarinov, 1974]
                                    |?-o †Nothogomphodontinae Tatarinov, 1974 sensu Ivachnenko, 2011 [Nothogomphodontidae Tatarinov, 1974]
                                    |  |-- †Nothogomphodon danilovi Tatarinov, 1974
                                    |  |?- †Herpetogale Keyser, 1979
                                    |  |?- †Microgomphodon Seeley, 1895
                                    |  `?- †Watsoniella Broili & Schroeder, 1935
                                    `--+--o †Ordosiidae
                                       |  |-- †Hazhenia concava Sun & Hou, 1981
                                       |  `--o †Ordosiodon Young, 1961
                                       |     |-- †O. lincheyuensis Young, 1961
                                       |     `-- †O. youngi (Hou, 1979) [Ordosia youngi Hou, 1979]
                                       `--o †Bauridae Broom, 1911
                                          |?- †Aelurosuchus Broom, 1906
                                          |?-o †Antecosuchus Tatarinov, 1973
                                          |  |-- †A. ochevi Tatarinov, 1973 [Neotrirachodon expectatus Tatarinov, 2002a (in partim)]
                                          |  `-- &38224;A. boreus (Tatarinov, 1973) [Scalenodon boreus Tatarinov, 1973]
                                          |?- †Traversodontoides wangwuensis
                                          `--o †Bauria Broom, 1909 [Baurioides Broom, 1925; Melinodon; ?Sesamodon Broom, 1905; Sesamodontoides Broom, 1950]
                                             |-- †B. cynops
                                             `-- †B. browni [Sesamodon browni]

Therocephalia incertae sedis:

Cerdops Broom, 1948
    ?†Cerdosuchoides Broom, 1936
    ?†Cerdosuchus Broom, 1936
    †Crapartinella croucheri Mendrez, 1975 [Crapartinellidae]
    †Cyonosaurus longicepsMoschorhynchus Broom, 1936
    †Notaelurodon Broom, 1936
    †Proalopecopsis Brink et Kitching, 1951
    †Scaloposuchus Broom, 1940
    ?†Theriodesmus Seeley, 1887

After Ivachnenko, 2011

<==o †Therocephalia
   |--+--o †Nanictidopoidea
   |  |  |--o †Hofmeyriidae
   |  |  |  |-- †Hofmeyria
   |  |  |  `-- †Gorochovetzia
   |  |  `--o †Nanictidopidae
   |  |     |-- †Nanictidops
   |  |     `-- †Purlovia
   |  `--+--+--o †Ericolacertidae
   |     |  |  |-- †Silphedosuchus
   |     |  |  `-- †Ericiolacerta
   |     |  `--o †Nothogomphodontoidea
   |     |     `--o †Nothogomphodontidae
   |     |        |-- †Nothogomphodon
   |     |        `-- †Watsoniella
   |     `--o †Bauriida
   |        |--o †Scalopognathidae
   |        |  `-- †Scalopognathus
   |        `--o †Bauriidae
   |           |?- †Hazhenia
   |           |?- †Urumchia
   |           |?- †Ordosyodon
   |           |?- †Traversodontoides
   |           |?- ?†Dongusaurus
   |           |-- †Antecosuchus
   |           `-- †Bauria
   `==o †Lycosuchida
      |--o †Lycosuchoidea
      |  |--o †Lycosuchidae
      |  |  |-- †Lycosuchus
      |  |  `-- †Porosteognathus
      |  `--+--o †Kotelcephalonidae
      |     |  `-- †Kotelcephalon
      |     `--o †Scylacosaurida
      |        |--o †Scylacosauridae
      |        |  |-- †Alopecodon
      |        |  |-- †Glanosuchus
      |        |  |-- †Ictidosaurus
      |        |  |-- †Pardosuchus
      |        |  |-- †Pristerognathus
      |        |  `-- †Scylacosaurus
      |        `--o †Scylacosuchidae
      |           `-- †Stylacosuchus
      `--+--o †Perplexisauroidea
         |  `--o †Perplexisauridae
         |     `-- †Perplexisaurus
         `--o †Scaloposaurida
            |--o †Ictidosuchoidea
            |  `--o †Ictidosuchidae
            |     |-- †Ictidosuchus
            |     |-- †Scalopodontes
            |     |?- †Ictidosuchoides
            |     `?- †Ichidosuchops
            `==o †Scaloposauroidea
               |--o †Karenitidae
               |  |-- Karenites
               |  `?- Scaloporhinus
               |--+--o †Scaloposauridae
               |  |  |-- †Scaloposaurus
               |  |  |-- †Scalopolacerta
               |  |  `--o †Tetracynodontinae
               |  |     |-- †Tetracynodon
               |  |     |-- †Homodontosaurus
               |  |     |-- †Scaloposuchus
               |  |     |?- ?†Scaloporhinus
               |  |     |-- †Malasaurus
               |  |     `?- ?†Muchia
               |  `--o †Lycideopoidea
               |     |--o †Annatherapsidae
               |     |  |-- †Annatherapsidus
               |     |  `-- †Chthonosaurus
               |     `--o †Lycideopidae
               |        |-- †Lycideops
               |        `?- †Regisaurus
               `--o †Moschorhinoidea
                  |--o †Moschorhinidae
                  |  |-- †Viatkosuchus
                  |  |-- †Moschorhinus
                  |  `-- †Promoschorhynchus
                  `--o †Moschowhaitsiidae
                     `-- †Moschowhaitsia

After Carroll, 1988, Battail & Surkov, 2000, and (partially) Botha, Abdala & Smith, 2007

<==o †Therocephalia
   |?- †Nanictidops
   |?- †Crapartinella
   |?- †Simorhinella
   |?- †Lycideops
   |?-o †Hofmeyriidae
   |  |-- †Hofmeyria
   |  `-- †Ictidostoma
   |?-o †Pristerosauria
   |  `--o Scylacosauridae
   |     |-- †Alopecodon
   |     |-- †Glanosuchus
   |     |-- †Ictidosaurus
   |     |-- †Pardosuchus
   |     |-- †Pristerognathus
   |     |-- †Scylacosaurus
   |     |-- †Hexacynodon
   |     `-- †Porosteugnathus
   |-- †Cyonosaurus
   `--+-- †Lycosuchus
      `--o †Eutherocephalia
         |?-o †Ericolacertidae
         |  |?- †Pedaeosaurus
         |  `-- †Ericiolacerta
         |--+-- Cynodontia
         |  `--o †Whaitsiidae
         |     |--o †Moschowhaitsiinae
         |     |  |-- †Moschowhaitsia
         |     |  `-- †Viatkosuchus
         |     `--o †Whaitsiinae
         |        `-- †Theriognathus
         `--+--o †Moschorhinidae
            |  |-- †Akidnognathus
            |  |-- †Promoschorhynchus
            |  |--o †Annatherapsinae
            |  |  |-- †Annatherapsidus
            |  |  `-- †Chthonosaurus
            |  |--o †Euchambersiinae
            |  |  `-- †Euchambersia
            |  `--o †Moschorhininae
            |     `-- †Moschorhinus
            `--o †Scaloposauria
               |?-o †Scaloposauridae
               |  |-- †Nanictocephalus
               |  |-- †Scaloposaurus
               |  |-- †Tetracynodon
               |  |-- †Scalopolacerta
               |  `?- †Zorillodontops
               `--o †Baurioidea
                  |?- †Scapolognathus
                  |?- †Dongusaurus
                  |--o †Ictidosuchopsidae
                  |  |?- †Rhigosaurus
                  |  |-- †Ictidosuchus
                  |  |-- †Ictidosuchoides
                  |  |-- †Ictidosuchops
                  |  |-- †Silphoictidoides
                  |  |-- †Silphedosuchus
                  |  `-- †Regisaurus
                  `--o †Bauridae
                     |--o †Nothogomphodontinae
                     |  `-- †Nothogomphodon
                     `--o †Bauriinae
                        |-- †Antecosuchus
                        |-- †Traversodontoides
                        `-- †Bauria

After van den Heever, 1994 (in reduced form from Huttenlocker, 2009)

<==o Eutheriodontia
   |-- Cynodontia
   `--o †Therocephalia
      |--o Pristerosauria
      |  |-- †Lycosuchidae
      |  `-- †Scylacosauridae
      `--o †Eutherocephalia

After Hopson & Barghusen, 1986 (in reduced form from Huttenlocker, 2009)

<==o Eutheriodontia
   |-- Cynodontia
   `--o †Therocephalia
      |--o Pristerosauria
      |  `-- †Pristerognathidae
      `--o †Eutherocephalia
         |-- †Hofmeyriidae
         `--+-- †Euchambersiidae
            |--o †Whaitsiidae
            |  |-- †Moschowhaitsia
            |  `-- †Theriognathus
            `--o †Bauroidea
               |-- †Ictidosuchidae
               `--+-- †Ictidosuchopsidae
                  `--+-- †Regisauridae
                     `--+-- †Lycideops [Lycidopsidae]
                        `--+-- †Ericolacertidae
                           `-- †Bauridae


Reference(s):

Special thanks to:

Jos H. M. Dols, for gathering additional information and species.