Class Mammalia Linnaeus, 1758 - mammals
Count: [*†*] 5o; †16o;76f;282g;438s
   Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001 - tribotherians see Clade Boreosphenida Luo, Cifelli & Kielan-Jaworowska 2001
  Count: [*†*] 4o; †5o;24f;82g;141s
     Infraclass Eutheria Gill, 1872
    Count: [*†*] 2o; †3o;12f;40g;62s
       Magnorder Epitheria McKenna, 1975 see Cohort Placentalia Owen, 1837
      Count: [*†*] 2o; †3o;11f;35g;56s
         Superorder †Asioryctitheria Novacek, Rougier, Wible, McKenna, Dashzeveg & Horovitz, 1997 see Order Asioryctitheria Novacek, Rougier, Wible, McKenna, Dashzeveg & Horovitz, 1997
        Count: [†*] †2f;6g;9s [26 Apr 2022]
           Family †Kennalestidae Kielan-Jaworowska, 1981 see Family Gypsonictopidae Van Valen, 1967
          Count: [†*] †2g;3s [26 Apr 2022]
             1 Genus †Kennalestes Kielan-Jaworowska, 1968
            Count: [†*] †2s [26 Apr 2022]
             2 ?Genus †Sailestes Nessov, 1982 [monotypic] see Genus Paranyctoides Fox, 1979
            Count: [†*] †1s [26 Apr 2022]