Order Proboscidea Owen, 1859 - elephants
   Suborder Elephantoidea Osborn, 1921 see Suborder Elephantiformes (Tassy, 1988)
     1 Family ‡Mammutidae Hay, 1922
     2 Family †Ambelodontidae nom. null.
     3 Family †Gomphotheriidae Hay, 1922 - gomphotheres
     3.n.1 Genus †Choerolophodon Schlesinger, 1917 - pig-toothed mastodons
     3.n.2 Family ‡Stegodontidae Osborn, 1918
     3.n.3 Family Elephantidae Gray, 1821 - elephants