Class Mammalia Linnaeus, 1758 - mammals
   Subclass †Allotheria Marsh, 1880
     Order †Multituberculata Cope, 1884
       Suborder †Cimolodonta McKenna, 1975
         †Paracimexomys group incertae sedis
           1 Genus †Paracimexomysᵀ Archibald, 1982
           2 Genus †Bryceomys Eaton, 1995
           3 Genus †Cedaromys Eaton & Cifelli, 2001
           4 Genus †Dakotamys Eaton, 1995 [monotypic]
           5 ?Genus †Ameribaatar Eaton & Cifelli, 2001 [monotypic]
           6 ?Genus †Barbatodon Rădulescu & Samson, 1986 [monotypic]
           7 ?Genus †Cimexomys Sloan & Van Valen, 1965