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
             ?Genus †Beleutinus Bazhanov, 1972, nom. dub. [monotypic]
               †Beleutinus orlovi Bazhanov, 1972, nom. dub.