Class Mammalia Linnaeus, 1758 - mammals Subclass †Allotheria Marsh, 1880 Order †Multituberculata Cope, 1884 Suborder †Cimolodonta McKenna, 1975 Family †Cimolomyidae Marsh, 1889, incertae sedis ?Genus †Buginbaatar Kielan-Jaworowska & Sochava, 1969 [monotypic] 1 †Buginbaatar transaltaiensis Kielan-Jaworowska & Sochava, 1969