Class Mammalia Linnaeus, 1758 - mammals Subclass †Allotheria Marsh, 1880 Order †Multituberculata Cope, 1884 Suborder †Cimolodonta McKenna, 1975 Superfamily †Ptilodontoidea Gregory & Simpson, 1926 (1887) Family †Neoplagiaulacidae Ameghino, 1890 Genus †Parectypodus Jepsen, 1930 1 †Parectypodus simpsoniᵀ Jepsen, 1930 2 †Parectypodus foxi Storer, 1991