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
     1 Genus †Diacodexis Cope, 1882
     2 Whippomorpha Waddell, Okada & Hasegawa 1999 see Suborder Whippomorpha