Class Mammalia Linnaeus, 1758 - mammals
   Subclass †Allotheria Marsh, 1880
     Order †Multituberculata Cope, 1884
       Suborder †"Plagiaulacida" Ameghino, 1889 [paraphyletic]
         †Plagiaulacid line
           Family †Eobaataridae Kielan-Jaworowska, Dashzeveg & Trofimov, 1987
             ?Genus †Monobaatar Kielan-Jaworowska, Dashzeveg & Trofimov, 1987 [monotypic]
               1 †Monobaatar mimicus Kielan-Jaworowska, Dashzeveg & Trofimov, 1987