<==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 [+Sparassodontidae Roger, 1896; +Conodonictidae Ameghino, F., 1935] (pussihyeenat)
         `--+--o †Proborhyaenidae Ameghino, 1897 [+Arminiheringiidae Ameghino, 1902]
            |  |-- †Arminiheringia acueta Ameghino, 1902 [Dilestes Ameghino, 1902]
            |  |-- †Paraborhyaena Hoffstetter & Petter, G., 1983
            |  `-- †Proborhyaena Ameghino, 1897
            `--+--o †Prothylacinidae Ameghino, 1894
               |  |-- †Pseudothylacinus Ameghino,  1902
               |  |--o †Prothylacynus Ameghino, 1891 [Prothylacocyon Winge, 1923; Napodonictis Ameghino, 1894]
               |  |  `-- †P. patagonicus
               |  |-- †Lycopsis Cabrera, 1927
               |  |-- †Stylocynus Mercerat, 1917
               |  `-- †Pseudolycopsis Marshall, 1976
               `--o †Thylacosmilidae Riggs, 1933 sensu Marshall, 1976 ("tikarihammaspussikissat")
                  |-- †Achlysictis Ameghino, 1891
                  |?- †Amphiproviverra manzaniana
                  |-- †Hyaenodontops Ameghino, 1908
                  |-- †Notosmilus Kraglievich, J. L., 1960
                  `--o †Thylacosmilus Riggs, 1933 [Achlysictis Ameghino, 1891; Notosmilus Kraglievich, J. L., 1960; Hyaenodontops Ameghino, 1908]
                     |-- †T. atrox
                     `-- †T. lentis


Reference(s):

Carroll, R. L., 1988: Vertebrate paleontology and evolution.

–W. H. Freeman and company, New York, 1988, 698

Carroll, R. L., 1988: Appendix. 594-648

in Carroll, R. L., 1988: Vertebrate paleontology and evolution.

–W. H. Freeman and company, New York, 1988, 698

    de Muizon, C., 1998: Mayulestes ferox, a borhyaenoid (Metatheria, Mammalia)
from the early Palaeocene of Bolivia: Phylogenetic and paleobiological implications.
--Geodiversitas: Vol. 20, #1, pp. 19-142 [from abstract]

    de Muizon, C., Cifelli, R. L. & Céspedes Paz, R., 1997:
The origin of the dog-like borhyaenoid marsupials of South America.
--Nature: Vol. 389, 2 October, pp. 486-489

McKenna, M. C. & Bell, S. K., (eds.) 1997: Classification of mammals – above the species level.

–Columbia University Press, New York, 1997, xii-631