Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Class Mammalia Linnaeus, 1758
Count: [*†*] 6o;1f;14g; †7o;26f;156g;4s
   "Eutheria" Gill 1872 [O'Leary, Allard, Novacek, Meng & Gatesy 2004] see Infraclass Eutheria Gill, 1872
  Count: [†*] †12g
     Genus †Kermackia Slaughter, 1971
    Count: -