Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Infraclass Tribosphenida McKenna, 1975 see Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001
       Supercohort Eutheria Gill, 1872 see Infraclass Eutheria Gill, 1872
         Cohort Edentata Cuvier, 1798
           Order †Palaeanodonta Matthew, 1918
             Family †Metacheiromyidae Wortman, 1903
               Subfamily †Metacheiromyinae Wortman, 1903
                 1 Genus †Palaeanodon Matthew, 1918
                 2 Genus †Metacheiromys Wortman, 1903