Class Mammalia Linnaeus, 1758 - mammals Count: [o] 18o;19f;2g; †12o Subclass Theria Parker & Haswell, 1897 Count: [o] 17o;19f;2g; †10o Infraclass Eutheria Gill, 1872 Count: [o†o] 16o;11f; †10o Cohort Ferungulata Count: [o†o] 7o; †8o 1 Superorder Ferae Linnaeus, 1758 see Grandorder Ferae Linnaeus, 1758 Count: [o] 1o 2 Superorder Protungulata Count: [o†o] 1o; †4o 3 Superorder Paenungulata Simpson, 1945 see Grandorder Paenungulata Simpson, 1945 Count: [o†o] 3o; †4o 4 Superorder Mesaxonia (Marsh, 1884) Count: [f†f] 1o;3f; †1f 5 Superorder Paraxonia (Marsh, 1884) Count: [f] 1o;9f