Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Class Mammalia Linnaeus, 1758
   Cetartiodactyla Montgelard, Catzeflis & Douzery 1997 see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
     Whippomorpha Waddell, Okada & Hasegawa 1999 see Suborder Whippomorpha
       Cetacea Brisson 1762 see Suborder Cetacea Brisson, 1762
         Pelagiceti Uhen, 2008
           Neoceti Fordyce & de Muizon, 2001
             Odontoceti Flower, 1867 see Parvorder Odontoceti Flower, 1867
               Synrhina Geisler et al., 2011
                 Superfamily Platanistoidea Gray, 1846
                   Family †Waipatiidae Fordyce, 1994
                     1 ?Genus †Sachalinocetus Dubrovo, 1971
                     2 ?Genus †Sulakocetus Mchedlidze, 1976
                     3 Genus †Waipatia Fordy, 1994
                     4 ?Genus †Otekaikea Tanaka & Fordyce, 2014