After McKenna & Bell, 1997, Sigogneau-Russell, 2003, Kielan-Jaworowska, Cifelli & Luo, 2004, and Ji, Luo, Yuan & Tabrum, 2006

<==o †Docodonta Kretzoi, 1958 sensu McKenna & Bell, 1997 [Docodontiformes Kinman, 1994, incl. Tegotheridia Tatarinov, 1994]
   |?- †Delsatia rhupotopi Sigogneau-Russell & Godefroit, 1997
   |?- †Dinnetherium nezorum Jenkins, Crompton & Downs, 1983 [Dinnetheriidae?] [Morganucodonta: Megazostrodontidae sensu Kielan-Jaworowska, Cifelli & Luo, 2004]
   `--+--o Megazostrodontidae Cow, 1986 [Morganucodonta sensu Kielan-Jaworowska, Cifelli & Luo, 2004 (in partim)]
      |  |-- †Indozostrodon simpsoni Datta & Das, 2001
      |  `-- †Megazostrodon rudnerae Crompton & Jenkins, 1968
      `--o †Docodontidae (Marsh, 1887) Simpson, 1929 [Docodonta sensu Kielan-Jaworowska, Cifelli & Luo, 2004] [Synonyms]
         |-- †Cyrtlatherium canei Freeman, 1979 sensu Sigogneau-Russell, 2001
         |--+--+?- †Haldanodon exspectatus Kühne & Krusat, 1972 sensu Sigoneau-Russell, 2003
         |  |  `--o †Borealestes Waldman & Savage, 1972
         |  |     |-- †B. serendipitus Waldman & Savage, 1972
         |  |     `-- †B. mussetti Sigogneau-Russell, 2003
         |  `--+-- †Dsugarodon zuoi Pfretzschner & Martin in Pfretzschner, Martin, Maisch, Matzke & Sun, 2005 [Acuodulodon sunae Hu, Meng & Clark, 2007]
         |     `--+-- †Castorocauda lutrasimilis Ji, Luo, Yuan & Tabrum, 2006
         |        `--+--o †Simpsonodon Kermack, Lee, Lees & Mussett, 1987 [Simpsonodontidae Averianov, Lopatin, Krasnolutskii & Ivantsov, 2010]
         |           |  |?- †S. splendens (Kühne, 1969) [= Henkelotherium guimarotae (Krebs, 1991), a paurodont]
         |           |  |-- †S. oxfordensis Kermack, Lee, Lees & Mussett, 1987 [S. oxfordiensis (lapsus calami)]
         |           |  `-- †S. sibiricus Averianov, Lopatin, Krasnolutskii & Ivantsov, 2010
         |           `--+--+-- †Agilodocodon scansorius Meng, Ji, Zhang, Liu, Grossnickle & Luo, 2015
         |              |  `-- †Krusatodon kirtlingtonensis Sigogneau-Russell, 2003
         |              `?-o †Tegotheriidae Tatarinov, 1994
         |                 |?- †Itatodon tatarinovi Lopatin & Averianov, 2005
         |                 |?- †Tashkumyrodon desideratus Martin & Averianov, 2004
         |                 |-- †Sibirotherium rossicus Maschenko, Lopatin & Voronkevich, 2002
         |                 `--+-- †Hutegotherium yaomingi Averianov, Lopatin, Krasnolutskii & Ivantsov, 2010
         |                    `-- †Tegotherium gubini Tatarinov, 1994
         `--+?- †Reigitherium bunodontum Bonaparte, 1990 [Reigitheriidae Bonaparte, 1990] [Mammalia incertae sedis sensu Kielan-Jaworowska, Cifelli & Luo, 2004]
            |--o †Peraiocynodon Simpson, 1928 [Docodon Marsh, 1881 sensu McKenna & Bell, 1997, and Kielan-Jaworowska, Cifelli & Luo, 2004]
            |  |-- †P. inexpectatus Simpson, 1928
            |  `-- †P. major Sigogneau-Russell, 2003
            |-- †Docofossor brachydactylus Luo, Meng, Ji, Liu, Zhang. & Neander, 2015
            `--o †Docodon Marsh, 1881 [taxonomic history]
               |-- †D. victor (Marsh, 1880) [taxonomic history]
               |-- †D. striatus (Marsh, 1880) [taxonomic history]
               |-- †D. affinis
               |-- †D. grassus [taxonomic history]
               `-- †D. superus (Simpson, 1929) [taxonomic history]

After Meng, Ji, Zhang, Liu, Grossnickle & Luo, 2015, and Luo, Meng, Ji, Liu, Zhang. & Neander, 2015

<==o †Docodonta
   |--+-- †Sibirotherium
   |  `--+-- †Tegotherium
   |     `-- †Hutegotherium
   `--+--+-- †Agilodocodon
      |  `-- †Krusatodon
      `--+-- †Simpsonodon
         `--+--+-- †Castorocauda
            |  `-- †Dsugarodon
            `--+-- †Itatodon
               `--+-- †Tashkumyrodon
                  `--+-- †Borealestes
                     `--+-- †Haldanodon
                        `--+-- †Docodon
                           `-- †Docofossor

After Averianov, Lopatin, Krasnolutskii & Ivantsov, 2010

<==o †Docodonta
   |-- †Itatodon
   `--+-- †Castorocauda
      |-- †Tashkumyrodon
      |--+-- †Borealestes
      |  `--o †Docodontidae
      |     |-- †Haldanodon
      |     `-- †Docodon
      `--+-- †Acuodulodon
         |--o †Simpsonodontidae
         |  |-- †Simpsonodon
         |  `-- †Dsugarodon
         `--o Tegotheriidae
            |-- †Krusatodon
            `--+-- †Hutegotherium
               `--+-- †Tegotherium
                  `-- †Sibirotherium

After Pfretzschner, Martin, Maisch, Matzke & Sun, 2005

<==o †Docodonta
   `--o †Docodontidae
      |--+-- †Borealestes
      |  `--+-- †Haldanodon
      |     `-- †Docodon
      `--+-- †Tashkumyrodon
         |-- †Sibirotherium
         `--+-- †Tegotherium
            `--+-- †Krusatodon
               `--+-- †Dsugarodon
                  `-- †Simpsonodon

Reference(s):

 

Special thanks to:

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