Class Mammalia Linnaeus, 1758 - mammals
   Subclass †Allotheria Marsh, 1880
     Order †Multituberculata Cope, 1884
       Suborder †"Plagiaulacida" Ameghino, 1889 [paraphyletic]
         †Plagiaulacid line
           1 Family †Plagiaulacidae Gill, 1872
           2 Family †Eobaataridae Kielan-Jaworowska, Dashzeveg & Trofimov, 1987
           3 Family †Albionbaataridae Kielan-Jaworowska & Ensom, 1994
           4 Genus †Janumys Eaton & Cifelli, 2001, incertae sedis [monotypic]