Mammaliaformes Rowe 1988 [crown clade] Mammalia Linnaeus, 1758 - mammals Theriiformes Rowe, 1988 see Division Theriiformes Rowe, 1988 †Allotheria Marsh, 1880 see Clade Allotheria Marsh 1880 †Multituberculata Cope, 1884 †Cimolodonta McKenna, 1975 †Ptilodontoidea Gregory & Simpson, 1926 (1887) 1 †Cimolodontidae Marsh, 1889 2 †Ptilodontidae Gregory & Simpson, 1926 (1887)