Pilosa Flower, 1883
Analcimorphus Ameghino, 1891
Anisodontherium Brandoni & De Iuliis, 2007
Caelodon Lund, 1839
Chasicobradys Scillato-Yane, Carlini & Vizcaino, 1987
Coclodon Lund, 1839
Cyclodon Lund, 1839
Diheterocnus Kraglievich, 1928
Eomegatherium Kraglievich, 1923
Eremotherium Spillmann, 1948
Gilsolaresia
Hapaloides Ameghino, 1902
Hapalops Ameghino, 1887
Hyperleptus Ameghino, 1891
Megathericulus Ameghino, 1904
Megatheridium Cabrera, 1929
Megatherium Cuvier, 1796
Neohapalops Kraglievich, 1923
Nothropus Burmeister, 1882
Nothrotheriops Hoffstetter, 1955
Nothrotherium Lydekker, 1889
Ocnopus Reinhardt, 1875
Orycterotherium Harlan, 1841
Parapelecyodon
Pelecyodon Ameghino, 1891
Perezfontanatherium
Planops Ameghino, 1887
Plesiomegatherium Roth, 1911
Prepotherium Ameghino, 1891
Proeremotherium Carlini, Brandoni & Sanchez, 2006
Promegatherium Ameghino, 1883
Pronothrotherium Ameghino, 1907
Proprepotherium Ameghino, 1904
Proscelidodon Bordas, 1935
Pyramiodontherium Rovereto, 1914
Schismotherium Ameghino, 1887
Synhapalops Kraglievich, 1930
Thalassocnus de Muizon & McDonald, 1995
Toelodon Lund, 1840
Urumaquia Carlini, Brandoni & Sanchez, 2006
Xenocnus de Paulo Couto, 1980
Xyophorus Ameghino, 1887
