Mammaliaformes Rowe 1988
   [crown] Class Mammalia Linnaeus, 1758 - mammals
     Subclass Theriiformes Rowe, 1988 see Division Theriiformes Rowe, 1988
       Infraclass Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995 see Clade Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg 1995
         Superlegion Trechnotheria McKenna, 1975 see Clade Trechnotheria McKenna 1975
           Legion Cladotheria McKenna, 1975 see Clade Cladotheria McKenna 1975
             Sublegion Zatheria McKenna, 1975 see Clade Zatheria McKenna 1975
               Infralegion Tribosphenida McKenna, 1975 see Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001
                 [crown] Supercohort Theria Parker & Haswell, 1897 - therians see Subclass Theria Parker & Haswell, 1897
                   Cohort Placentalia Owen, 1837 - placentals
                     Magnorder Epitheria McKenna, 1975 see Cohort Placentalia Owen, 1837
                       Superorder Preptotheria McKenna, 1975
                         Grandorder Ungulata Linnaeus, 1766
                           Mirorder Eparctocyona McKenna, 1975
                             Order Cete Linnaeus, 1758 see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
                               Suborder Cetacea Brisson, 1762 - cetaceans see Infraorder Cetacea Brisson, 1762
                                 Infraorder Autoceta Haeckel, 1866
                                   Superfamily †Squalodontoidea Brandt, 1873 see Superfamily Platanistoidea Gray, 1846
                                     Family †Squalodontidae Brandt, 1873 - shark-toothed dolphins
                                       01 Genus †Parasqualodon Hall, 1911, nom. dub.
                                       02 Genus †Metasqualodon Hall, 1911
                                       03 Genus †Eosqualodon Rothausen, 1968
                                       04 Genus †Prosqualodon Lydekker, 1894
                                       05 Genus †Patriocetus Abel, 1913
                                       06 Genus †Agriocetus Abel, 1913, nom. dub.
                                       07 Genus †Saurocetus Agassiz, 1848, nom. dub.
                                       08 Genus †Colophonodon Leidy, 1853, nom. dub.
                                       09 Genus †Sulakocetus Mchedlidze, 1976
                                       10 Genus †Squalodon Grateloup, 1840
                                       11 Genus †Kelloggia Mchedlidze, 1976 see Genus Squalodon Grateloup, 1840
                                       12 Genus †Microcetus Kellogg, 1923
                                       13 Genus †Neosqualodon Dal Piaz, 1904
                                       14 Genus †Phoberodon Cabrera, 1926
                                       15 Genus †Sachalinocetus Dubrovo, 1971