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 Genus †Murtoilestes Averianov & Skutschas, 2001 [monotypic] †Murtoilestes abramovi (Averianov & Skutschas, 2000)