Class Mammalia Linnaeus, 1758 - mammals Subclass †Allotheria Marsh, 1880 Order †Multituberculata Cope, 1884 Suborder †Cimolodonta McKenna, 1975 †Paracimexomys group incertae sedis ?Genus †Cimexomys Sloan & Van Valen, 1965 †Cimexomys gratus (Jepsen, 1930)