Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Clade Mammalia Linnaeus 1758 [Rowe 2020]
   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
               1 †Charleston mysticetes
               2.1 Family †Mammalodontidae Mitchell, 1989
               2.2.1? Family †Aetiocetidae Emlong, 1966
               2.2.2.1? Family †Llanocetidae Mitchell, 1989 [monotypic]
               2.2.2.2 Chaeomysticeti Mitchell, 1989