Mammalia Linnaeus, 1758
Anisotemnus Ameghino, 1902
Calodontotherium Roth, 1903
Coelostylodon Simpson, 1970
Dialophus Ameghino, 1901
Distylophorus Ameghino, 1902
Isotemnus Ameghino, 1897
Pelurocoelodon
Periphragnis Roth, 1899
Pleurostylodon Ameghino, 1897
Plexotemnus Ameghino, 1904
Rhyphodon Roth, 1899
Stylophorus Roth, 1901
Thomashuxleya Ameghino, 1901
