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
                                   Parvorder Odontoceti Flower, 1867 - toothed whales
                                     Superfamily Delphinoidea Gray, 1821
                                       01 Genus †Hesperoinia Zei, 1956, nom. dub.
                                       02 Genus †Palaeophocaena Abel, 1905
                                       03 Genus †Protophocaena Abel, 1905
                                       04 Genus †Prionodelphis Frenguelli, 1922, nom. dub.
                                       05 Family Delphinidae Gray, 1821 - oceanic dolphins
                                       06 Family Pontoporiidae Gray, 1870 - Franciscana, La Plata dolphin
                                       07 Family Lipotidae Zhou, Quian & Li, 1978 - baiji
                                       08 Family Iniidae Gray, 1846 - boutos
                                       09 Family †Kentriodontidae Slijper, 1936
                                       10 Family Monodontidae Gray, 1821 - white whales
                                       11 Family †Odobenocetopsidae de Muizon, 1993
                                       12 Family †Dalpiazinidae de Muizon, 1988
                                       13 Family †Acrodelphinidae Abel, 1905, nom. dub.
                                       14 Family Phocoenidae Gray, 1825 - porpoises
                                       15 Family †Albireonidae Barnes, 1984
                                       16 Family †Hemisyntrachelidae Slijper, 1936 see Family Delphinidae Gray, 1821