Class Mammalia Linnaeus, 1758 - mammals
   Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001 - tribotherians see Clade Boreosphenida Luo, Cifelli & Kielan-Jaworowska 2001
     Infraclass Eutheria Gill, 1872
       Magnorder Epitheria McKenna, 1975 see Cohort Placentalia Owen, 1837
         Superorder Anagalida Szalay & McKenna, 1971 see Order Anagalida Szalay & McKenna, 1971
           Family †Zalambdalestidae Gregory & Simpson, 1926
             1 Genus †Zalambdalestesᵀ Gregory & Simpson, 1926 [monotypic]
             2 Genus †Alymlestes Averianov & Nessov, 1995 [monotypic]
             3 Genus †Barunlestes Kielan-Jaworowska, 1975 [monotypic]
             4 Genus †Kulbeckia Nessov, 1993
             5 ?Genus †Beleutinus Bazhanov, 1972, nom. dub. [monotypic]