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
Genus †Metacheiromys Wortman, 1903
1 †Metacheiromys marshiᵀ Wortman, 1903
2 †Metacheiromys dasypus Osborn, 1904