After Martínez, Fernandes & Alcober, 2013

Alternative phylogeny after Oliviera, 2006

Alternative phylogeny after Rubidge & Sidor, 2001, Martinelli, Bonaparte, Schultz, & Rubert, 2005, and Sidor & Hancox, 2006

Alternative phylogeny after Rowe, 1988, and Luo, 1994

<==o Eucynodontia (advanced cynodonts and mammals)
   |--o †Cynognathia Hopson & Barghusen, 1986
   |  |--o †Cynognathidae Seeley, 1895
   |  |  `--o †Cynognathus Seeley, 1895 [Cynidiognathus Haughton, 1922; Lycaenognathus; Lycochampsa; Karoomys browni Broom, 1903]
   |  |     |?- †C. longiceps (Haughton, 1922) [Cynidiognathus longiceps]
   |  |     |?- †C. ferox [Lycochampsa ferox]
   |  |     `-- †C. crateronotus Seeley, 1895 [?Cistecynodon parvus Brick & Kitching, 1953 (juvenile)]
   |  `--o †Gomphodontia Seeley, 1895
   |     |-- †Diademodontidae Haughton, 1925
   |     `--+==Trirachodontidae Romer, 1967
   |        `-- †Traversodontidae von Huene, 1936 [= Huene, v. Huene]
   `--o Probainognathia Hopson, 1990 sensu Oliviera, 2006
      |-- †Lumkuia fuzzi Hopson & Kitching, 2001
      `--+-- †Chiniquodontidae v. Huene, 1936 after Carroll, 1988 [taxonomic history]
         `--+--o †Probainognathidae
            |  |?- †Lepagia gaumemsis Hahn, Lepage & Wouters, 1987
            |  `-- †Probainognathus jenseni Romer, 1970
            `--+--o †Ecteniniidae Martínez, Fernandes & Alcober, 2013
               |  |-- †Ecteninion lunensis Martinez, May & Forster, 1996
               |  |-- †Trucidocynodon riograndensis Oliveira, Soare & Schultz, 2010
               |  `-- †Diegocanis elegans Martínez, Fernandes & Alcober, 2013
               `--o Prozostrodontia
                  |-- †Prozostrodon brasiliensis (Barberena, Bonaparte & Teixeira, 1987) Bonaparte & Barberena, 2001 [†Thrinaxodon brasiliensis Barberena, Bonaparte & Teixeira, 1987]
                  `-+-- †Therioherpeton cargnini Bonaparte & Barberena, 1975 [Theioherpeton lapsus calami] [paraphyletic Therioherpetidae]
                    `--+-- †Tritylodontidae Cope, 1884
                       `--+-- †Riograndia guaibaensis Bonaparte, Ferigolo & Ribeiro, 2001 [paraphyletic Therioherpetidae]
                          |--o †Pachygenelus Watson, 1913 [?Pattsia Lees & Mills, 1983; Pachygenelius] [Tritheledontidae]
                          |  |-- †P. monus Watson, 1913 [?Pattsia likhoelensis Lees & Mills, 1983]
                          |  |-- †P. sp. cf. P. monus [Shubin, Olsen & Sues, 1994] [McCoy Brook Formation, Canada, North America]
                          |  `-- †P. broomi (Crompton, 1958) [Diarthrognathus broomi Crompton, 1958]
                          `--+--o †Brasilodontidae sensu Oliviera, 2006
                             |  |-- †Brasilodon quadrangularis Bonaparte, Martinelli, Schultz & Rubert, 2003
                             |  `?- †Brasilitherium riograndensis Bonaparte, Martinelli, Schultz & Rubert, 2003
                             `-- Mammaliaformes Rowe, 1988 [Mammalia sensu Luo, 1994 [sensu lato]] (mammals and near-mammals; nisäkkäät)

Eucynodontia, not treated by Martínez et al. (2013):

        
    Chiniquodontoidea Huene, 1936 [Tritheledontidae sensu Luo, 1994]Eoraetia siegerti W.O. Dietrich, 1937; U.Trias. CEu.
        †Kunminia minima Young, 1947; L.Jur. SEAs.
        †“Hahniaobliqua Godefroit & Battail, 1997 [generic name preoccubied (Dykes, 2001)]
        †Maubeugia lotharingica Godefroit & Battail, 1997

        †Dromatheriidae Gill, 1872
            †Dromatherium sylvestre Emmons, 1857
            †Microconodon Osborn, 1886
                †M. sp. [Dykes, 2001]
                †M. tenuirostris Osborn, 1886

        †Ictidosauria Broom, 1929 [taxonomic history]
            †Therioherpetidae Bonaparte & Barberena, 1975 [Chiniquodontidae in partim (Carroll, 1988)] [incl. Riograndidae Bonaparte, Ferigolo & Ribeiro, 2001]Charruodon tetracuspidatus Abdala & Ribeiro, 2000
                †Meurthodon gallicus Sigogneau-Russell & Hahn, 1994
            †Tritheledontidae Broom, 1912 [taxonomic history]
                †Tritheledon riconoi Broom, 1912 [Trithelodon ]
                †Chalimia musteloides Bonaparte, 1978
                †Diarthrognathus broomi Crompton, 1958 [Diarthrognathidae Crompton, 1958]Elliotherium kersteni Sidor & Hancox, 2006
                †Irajatherium hernandezi Martinelli, Bonaparte, Schultz, & Rubert, 2005

Nomina dubia & invalida:

Pachygenelus milleri Chatterjee, 1983; U.Trias. SWNA. [parts of fish (Sidor & Hancox, 2006)]

After Oliviera, 2006

<==o Eucynodontia
   |--o †Cynognathia
   |  `--o †Cynognathidae
   |     `-- †Cynognathus
   `--o Probainognathia
      |-- †Lumkuia
      `--+-- †Chiniquodontidae
         `--+--o †Probainognathidae
            |  |?- †Lepagia
            |  `-- †Probainognathus
            `--+-- †Tritylodontoidea
               `--+-- †Prozostrodon
                  |-- Mammaliaformes
                  |?-o †Dromatheriidae
                  |  |-- †Dromatherium
                  |  `-- †Microconodon
                  `--o †Ictidosauria
                     |--o †Brasilodontidae
                     |  |-- †Brasilodon
                     |  `-- †Brasilitherium
                     `--+--o †Therioherpetidae
                        |  |-- †Charruodon
                        |  |-- †Therioherpeton
                        |  |-- †Meurthodon
                        |  `-- †Riograndia
                        `--o †Tritheledontidae
                           |?- †Tritheledon
                           |-- †Chalimia
                           `--+-- †Diarthrognathus
                              |-- †Elliotherium
                              |-- †Irajatherium
                              `-- †Pachygenelus

Reference(s):

  • Oliveira, É. V., 2006: Reevaluation of Therioherpeton cargnini Bonaparte & Barberena, 1975 (Probainognathia, Therioherpentidae) from the Upper Triassicof Brazil.
    –Geodiversitas: Vol. 28, #3, pp. 447-465

After Rubidge & Sidor, 2001, Martinelli, Bonaparte, Schultz, & Rubert, 2005, and Sidor & Hancox, 2006

<==o Eucynodontia
   |-- †Lumkuia
   |--o †Cynognathia
   |  |--o †Cynognathidae
   |  |  `-- †Cynognathus
   |  `-- †Tritylodontoidea
   `--o Probainognathia
      |?- †Ecteninion
      |--o †Probainognathidae
      |  |?- †Lepagia
      |  `-- †Probainognathus
      `--o Chiniquodontoidea
         |?- †Eoraetia
         |?- †Kunminia
         |?- †“Hahniaobliqua
         |?- †Maubeugia
         |-- †Chiniquodontidae
         `--+--o †Therioherpetidae
            |  |-- †Charruodon
            |  |-- †Therioherpeton
            |  `-- †Meurthodon
            `--+?- †Brasilodon
               |?- †Brasilitherium
               |--+-- †Prozostrodon
               |  `-- Mammaliaformes
               `--o †Ictidosauria
                  |--o †Riograndidae
                  |  `-- †Riograndia
                  `--o †Tritheledontidae
                     |--+-- †Chalimia
                     |  `-- †Elliotherium
                     `--+-- †Diarthrognathus
                        |-- †Irajatherium
                        |?- †Tritheledon
                        `-- †Pachygenelus

After Rowe, 1988, and Luo, 1994

<==o Eucynodontia
   |-- †Cynognathus
   `--o Probainognathia
      |--o †Probainognathidae
      |  |?- †Lepagia
      |  `-- †Probainognathus
      `--o Mammaliamorpha
         |-- †Tritylodontoidea
         `--o Chiniquodontoidea
            |-- †Chiniquodontidae
            `--+-- Mammaliaformes
               `--o †Tritheledontidae
                  |-- †Chalimia
                  |-- †Diarthrognathus
                  |?- †Therioherpeton
                  |-- †Tritheledon
                  `-- †Pachygenelus

Reference(s):

Special thanks to:

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