Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Class Mammalia Linnaeus, 1758
Count: [*†*] 14f;39g;22s; ‡1f;1g;1s; †1o;28f;239g;37s;1v
   Cetartiodactyla Montgelard, Catzeflis & Douzery 1997 see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
  Count: [*†*] 14f;39g;22s; ‡1f;1g;1s; †28f;238g;37s;1v
     Whippomorpha Waddell, Okada & Hasegawa 1999 see Suborder Whippomorpha
    Count: [*†*] 14f;39g;22s; ‡1f;1g;1s; †28f;237g;37s;1v
       Cetacea Brisson 1762 see Suborder Cetacea Brisson, 1762
      Count: [*†*] 13f;39g;22s; ‡1f;1g;1s; †28f;236g;37s;1v [16 Jul 2022]
         Pelagiceti Uhen, 2008
        Count: [*†*] 13f;39g;22s; ‡1f;1g;1s; †24f;206g;33s;1v [16 Jul 2022]
           Neoceti Fordyce & de Muizon, 2001
          Count: [*†*] 13f;39g;22s; ‡1f;1g;1s; †22f;191g;32s;1v [16 Jul 2022]
             Mysticeti Cope, 1891 see Parvorder Mysticeti Cope, 1891
            Count: [*†*] 4f;6g;7s; †7f;54g;10s;1v [10 Jul 2022]
               1 †Charleston mysticetes
              Count: -
               2.1 Family †Mammalodontidae Mitchell, 1989
              Count: [†*] †2g;1s [5 Jul 2022]
               2.2.1? Family †Aetiocetidae Emlong, 1966
              Count: [†*] †6g;1s [7 Jul 2022]
               2.2.2.1? Family †Llanocetidae Mitchell, 1989 [monotypic]
              Count: [†*] †1g [7 Jul 2022]
               2.2.2.2 Chaeomysticeti Mitchell, 1989
              Count: [*†*] 4f;6g;7s; †4f;45g;8s;1v [10 Jul 2022]