Mammalia Linnaeus, 1758
Ancylocoelus Ameghino, 1895
Colpodon Burmeister, 1885
Henricofilholia Ameghino, 1901
Huilatherium Villarroel & Guerrero Diaz, 1983
Leontinia Ameghino, 1895
Scarrittia Simpson, 1934
