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
       Family †Otlestidae Nessov, 1985, incertae sedis
         1 Genus †Otlestesᵀ Nessov, 1985 [monotypic] see Genus Bobolestes Nessov, 1985
         2 Genus †Murtoilestes Averianov & Skutschas, 2001 [monotypic]
         3 Genus †Prokennalestes Kielan-Jaworowska & Dashzeveg, 1989