Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Clade Mammalia Linnaeus 1758 [Rowe 2020]
Status: extant
   Cetartiodactyla Montgelard, Catzeflis & Douzery 1997 see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
  Status: extant
     Whippomorpha Waddell, Okada & Hasegawa 1999 see Suborder Whippomorpha
    Status: extant
       Cetacea Brisson 1762 see Suborder Cetacea Brisson, 1762
      Status: extant
         Pelagiceti Uhen, 2008
        Status: extant
           Neoceti Fordyce & de Muizon, 2001
          Status: extant
             Odontoceti Flower, 1867 see Parvorder Odontoceti Flower, 1867
            Status: extant
               Synrhina Geisler et al., 2011
              Status: extant
                 Superfamily Platanistoidea Gray, 1846
                Status: extant
                   2.1.1? Family †Squalodontidae Brandt, 1873 - shark-toothed dolphins
                  Distribution: Australasia, North & South America, Europe; Period: Late Oligocene - Middle Miocene [28.1 - 11.63 Mya]; Status: fossil
                   2.1.2? Family †Dalpiazinidae de Muizon, 1988 [monotypic]
                  Status: fossil
                   2.2.1? Family †Waipatiidae Fordyce, 1994
                  Distribution: Europe;Australasia, Pacific; Period: Late Oligocene - Middle Miocene [28.1 - 11.63 Mya]; Status: fossil
                   2.2.2.1 Family †Allodelphinidae Barnes, 2006
                  Distribution: Asia, North America; Period: Miocene [23.03 - 5.333 Mya]; Status: fossil
                   2.2.2.2.1 Family †Squalodelphinidae Dal Piaz, 1916
                  Period: Early Miocene [23.03 - 15.97 Mya]; Status: fossil
                   2.2.2.2.2 Family Platanistidae Gray, 1846 - river dolphins
                  Distribution: Europe, Asia, North & South America (marine & freshwater); Period: Early Miocene - Present [23.03 Mya - present]; Status: extant