Mammalia Linnaeus, 1758
Antepithecus Ameghino, 1901
Archaeophylus Ameghino, 1897
Archoeophylus Ameghino, 1897
Argyrohyrax Ameghino, 1897
Caenophilus Ameghino, 1903
Clorinda Ameghino, 1895
Cochilus
Epipatriarchus Ameghino, 1903
Guilielmoscottia Ameghino, 1901
Icochilus Ameghino, 1889
Interatherium Moreno, 1882
Medistylus Stirton, 1952
Miocochilius Stirton, 1953
Notopithecus Ameghino, 1897
Paracochilius Bordas, 1939
Phanophilus Ameghino, 1903
Plagiarthrus Ameghino, 1896
Plagiarthus
Proargyrohyrax
Protypotherium Ameghino, 1882
Punapithecus Lopez & Bond, 1996
Santiagorothia
Transpithecus Ameghino, 1901
