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
             Mysticeti Cope, 1891 see Parvorder Mysticeti Cope, 1891
               Chaeomysticeti Mitchell, 1989
                 01.1 Family †Eomysticetidae Sanders & Barnes, 2002
                 01.2 Family †Cetotheriopsidae Brandt, 1872
                 02 Balaenomorpha Geisler & Sanders, 2003
                 03 Genus †Aglaocetus Kellogg, 1934, incertae sedis
                 04 Genus †Cophocetus Packard & Kellogg, 1934, incertae sedis
                 05 Genus †Diorocetus Kellogg, 1968, incertae sedis
                 06 Genus †Hibacetus Otsuka & Ota, 2008, incertae sedis
                 07 Genus †Horopeta Tsai & Fordyce, 2015, incertae sedis
                 08 Genus †Isanacetus Kimura & Ozawa, 2002, incertae sedis
                 09 Genus †Mauicetus Benham, 1939, incertae sedis
                 10 Genus †Parietobalaena Kellogg, 1924, incertae sedis
                 11 Genus †Pelocetus Kellogg, 1965, incertae sedis
                 12 Genus †Thinocetus Kellogg, 1969, incertae sedis
                 13 Genus †Titanocetus Bisconti, 2006, incertae sedis