Class Mammalia Linnaeus, 1758 - mammals
   Order †Eutriconodonta Kermack, Mussett & Rigney, 1973, incertae sedis
     Family †Triconodontidae Marsh, 1887
       Subfamily †Tricondontinae Kermack & Kermack, 1971, orth. inval. see Subfamily Triconodontinae Marsh, 1887
         Genus †Priacodon Marsh, 1887
           1 †Priacodon feroxᵀ (Marsh, 1880)
           2 †Priacodon fruitaensis Rasmussen & Callison, 1981
           3 †Priacodon grandaevus Simpson, 1925
           4 †Priacodon lulli Simpson, 1925
           5 †Priacodon robustus (Marsh, 1879)