Placentalia Owen 1837 [O'Leary, Allard, Novacek, Meng & Gatesy 2004] see Cohort Placentalia Owen, 1837 Superorder Insectivora Bowdich, 1821 Order †Leptictida McKenna, 1975 1 Family †Gypsonictopidae Van Valen, 1967 2 Family †Leptictidae Gill, 1872