Class Mammalia Linnaeus, 1758 - mammals
Subclass †Allotheria Marsh, 1880
Order †Multituberculata Cope, 1884
Suborder †Cimolodonta McKenna, 1975
Family †Cimolomyidae Marsh, 1889, incertae sedis
Genus †Meniscoessus Cope, 1882
1 †Meniscoessus conquistusᵀ Cope, 1882
2 †Meniscoessus borealis Simpson, 1927
3 †Meniscoessus ferox Fox, 1971
4 †Meniscoessus intermedius Fox, 1976
5 †Meniscoessus major (Russell, 1937)
6 †Meniscoessus robustus (Marsh, 1889)