Mammalia Linnaeus, 1758 - mammals
   Carnivoramorpha Wyss & Flynn, 1993
     Carnivoraformes Flynn, Finarelli & Spaulding 2010
       [stem] Family †Miacidae Cope, 1880
         †Vulpavus group Marsh, 1871
           1 †Vassacyon promicrodon (Wortman & Matthew, 1899)
           2.1 †Vulpavus profectus Matthew, 1909
           2.2 †Vulpavus palustris Marsh, 1871
           2.3 †Vulpavus australis Matthew, 1915
           2.4.1 †Vulpavus ovatus Matthew, 1909
           2.4.2 Genus †Palaearctonyx Matthew, 1909