Mammalia Linnaeus, 1758
Eohegetotherium Ameghino, 1901
Eopachyrucos Ameghino, 1901
Ethegotherium Simpson, Minoprio & Patterson, 1962
Getohetherium Ameghino, 1903
Hegetotherium Ameghino, 1887
Hemihegetotherium Rovereto, 1914
Pachyrukhos Ameghino, 1885
Paedotherium Burmeister, 1888
Paedsotherium
Pedotherium Ameghino, 1889
Prohegetotherium Ameghino, 1897
Propachyrucos Ameghino, 1897
Prosotherium Ameghino, 1897
Pseudohegetotherium Cabrera & Kraglievich, 1931
Pseudopachyrucos Ameghino, 1901
Raulringueletia
Sallatherium
Tegehotherium Ameghino, 1903
Tremacyllus Ameghino, 1891
