Nothocyon Matthew, 1899 † (original description)
Oxyaenodon Matthew, 1899 † accepted as Oxyaenodon Wortman, 1899 † (original description)
Oxyaenodon Wortman, 1899 † (original description)
Palaeictops Matthew, 1899 † (original description)
Palaeosinopa Matthew, 1899 † accepted as Palaeosinopa Matthew, 1901 † (original description)
Paradaphaenus Matthew, 1899 † (original description)
Phlaocyon Matthew, 1899 † (original description)
Procynodictis Matthew, 1899, nom. nud. † accepted as Procynodictis Wortman & Matthew, 1899 † (original description)
Prodaphaenus Matthew, 1899 † accepted as Miacis Cope, 1872 † (original description)
Proechimys Allen, 1900 (original description)
Proëchimys Allen, 1900 accepted as Proechimys Allen, 1900 (original description)
Sanninoidea Beutenmüller, 1899 (original description)