Mammalia Linnaeus, 1758 - mammals Carnivoramorpha Wyss & Flynn, 1993 Carnivoraformes Flynn, Finarelli & Spaulding 2010 [stem] Family †Miacidae Cope, 1880 †Uintacyon group Leidy, 1872 †Xinyuictis tenuis Zhen, Tung & Chi, 1975