After McKenna & Bell, 1997, de Muizon, Cifelli & Céspedes Paz, 1997 and de Muizon, 1998

<==o †Sparassodonta Ameghino, 1884 [Synonyms] (pussihyeenat; marsupial hyaenas)
   |?- †Anatherium Ameghino, 1887 [Synonym of †Cladosictis Ameghino, 1887? (McKenna & bell, 1997)]
   |?- †Plesiofelis Roth, 1903 [Synonym of †Pharsophorus Ameghino, 1897? (McKenna & bell, 1997)]
   |?- †Pseudonotictis
   |-- †Sallacyon Villarroel & Marshall, 1982 [Andinogale Hoffstetter & Petter, G., 1983]
   |--o †Mayulestidae de Muizon, 1994
   |  |-- †Mayulestes ferox de Muizon, 1994
   |  `-- †Allqokirus australis Marshall & de Muizon, 1988
   `--+-- †Hathliacynidae Ameghino, 1894 [Borhyaenidae: Hathliacyninae Ameghino, 1894 sensu Kirsch, 1977]
      `--+-- †Borhyaenidae Ameghino, 1894 [incl. Sparassodontidae Roger, 1896; +Conodonictidae Ameghino, F., 1935] (pussihyeenat)
         `--+--o †Proborhyaenidae Ameghino, 1897 [incl. Arminiheringiidae Ameghino, 1902]
            |  |-- †Arminiheringia acueta Ameghino, 1902 [Dilestes Ameghino, 1902]
            |  |-- †Paraborhyaena Hoffstetter & Petter, G., 1983
            |  `-- †Proborhyaena gigantea Ameghino, 1897
            `--+--o †Prothylacinidae Ameghino, 1894
               |  |-- †Pseudothylacinus Ameghino,  1902
               |  |--o †Prothylacynus Ameghino, 1891 [Prothylacocyon Winge, 1923; Napodonictis Ameghino, 1894]
               |  |  `-- †P. patagonicus
               |  |-- †Lycopsis longirostris Cabrera, 1927
               |  |-- †Stylocynus paranensis Mercerat, 1917
               |  `-- †Pseudolycopsis Marshall, 1976
               `--o †Thylacosmilidae Riggs, 1933 sensu Marshall, 1976 (“tikarihammaspussikissat”)
                  |--o †Achlysictis Ameghino, 1891
                  |  |-- †A. acutidens
                  |  |-- †A. lelongi Ameghino, 1891
                  |  |-- †A. propampina
                  |  `-- †A. purgens Ameghino, 1904 [=? A. pungens]
                  |?- †Amphiproviverra manzaniana
                  |-- †Hyaenodontops chapalmalensis Ameghino, 1908 [Thylacosmilus Riggs, 1933]
                  |-- †Notosmilus pattersoni Kraglievich, J. L., 1960 [Thylacosmilus Riggs, 1933]
                  `--o †Thylacosmilus Riggs, 1933 [incl. ?Notosmilus Kraglievich, 1960; ?Hyaenodontops Ameghino, 1908; Achlysictis Ameghino, 1891; Notosmilus Kraglievich, J. L., 1960; Hyaenodontops Ameghino, 1908]
                     |-- †T. atrox Riggs, 1933 [incl. T. lentis Riggs, 1933??]
                     `-- †T. lentis Riggs, 1933

Reference(s):

 

Special thanks to:

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