Order Proboscidea Owen, 1859 - elephants
   Family Elephantidae Gray, 1821 - elephants
     Subfamily Elephantinae Gray, 1821
       Genus ‡Mammuthus Brookes, 1828 - mammoths
         1 †Mammuthus subplanifrons (H.F. Osborn, 1928) - South African mammoth
         2 †Mammuthus rumanus (Ştefănescu, 1924)
         3 †Mammuthus africanavus (Arambourg, 1952) - African mammoth
         4 †Mammuthus meridionalis (Nesti, 1825) - southern mammoth
         4.n.1 †Mammuthus creticus (Bate, 1907)
         4.n.2 †Mammuthus trogontherii (Pohlig, 1885) - steppe mammoth
         4.n.2.2 †Mammuthus intermedius (Jourdan, 1861)
         4.n.2.n ‡Mammuthus primigenius (Blumenbach, 1799) - woolly mammoth
         5 †Mammuthus lamarmorae (Forsyth Major, 1883) - Sardinian dwarf mammoth
         6.1 †Mammuthus columbi (Falconer, 1857) - Columbian mammoth
         6.2 ?†Mammuthus jeffersonii (Osborn, 1922) - Jefferson's mammoth