Classification of the family Megatheriidae
Fm. †Megatheriidae Gray 1821
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G. †Diellipsodon Berg 1899
G. †Eomegatherium Kraglievich 1926
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†Eomegatherium andinum Kraglievich 1930
†Eomegatherium cabrerai Kraglievich 1930
†Eomegatherium nanum Burmeister 1891
Subfm. †Megatheriinae Gill 1872
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G. †Eremotherium Spillmann 1948
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†Eremotherium eomigrans De Iuliis and Cartelle 1999
†Eremotherium laurillardi Lund 1842
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Invalid names: Chelonia couperi Harlan 1842 [synonym], Eremotherium carolinense Spillmann 1948 [synonym], Eremotherium juanajuatense Duges 1882 [synonym], Megatherium hudsoni White 1941 [synonym], Xenocnus cearensis Paula Couto 1980 [synonym]
†Eremotherium rusconii Schaub 1935
†Eremotherium sefvei De Iuliis and Saint-Andre 1997
Invalid names: Schaubia Hoffstetter 1949 [synonym], Schaubitherium Hoffstetter 1950 [synonym], Xenocnus Paula Couto 1980 [synonym]
G. †Megathericulus Ameghino 1904
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†Megathericulus patagonicus Ameghino 1904
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Invalid names: Megathericulus primaevus Cabrera 1939 [synonym]
G. †Megatherium Cuvier 1796
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†Megatherium altiplanicum Saint-Andre and De Iuliis 2001
†Megatherium americanum Cuvier 1796
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Invalid names: Essonodontherium gervaisi Gervais and Ameghino 1880 [synonym]
†Megatherium bergi Moreno and Mercerat 1891
†Megatherium celendinense Pujos 2006
†Megatherium elenense Hoffstetter 1949
†Megatherium gallardoi Ameghino and Kraglievich 1921
†Megatherium gaudryi Moreno 1888
†Megatherium istilarti Kraglievich 1925
†Megatherium lundi Gervais and Ameghino 1880
†Megatherium medinae Philippi 1893
†Megatherium mirabile Leidy 1855
†Megatherium rectidens Rovereto 1914
†Megatherium sundti Philippi 1893
†Megatherium tarijense Gervais and Ameghino 1880
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Invalid names: Megatherium filholi Moreno 1888 [synonym]
†Megatherium uquiense Kraglievich 1930
†Megatherium urbinai Pujos and Salas 2004
Invalid names: Essonodontherium Ameghino 1884 [synonym], Megatherium antiquum Ameghino 1885 [nomen dubium], Neoracanthus Ameghino 1889 [synonym], Oracanthus Ameghino 1885 [synonym]
G. †Plesiomegatherium Roth 1911
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†Plesiomegatherium halmyronomum Cabrera 1928
†Plesiomegatherium hansmeyeri Roth 1911
Invalid names: Plesiomegatherium triangulatum Rusconi 1944 [nomen vanum]
G. †Pliomegatherium Kraglievich 1930
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†Pliomegatherium lelongi Kraglievich 1930
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Invalid names: Pliomegatherium paranensis Kraglievich 1930 [synonym]
G. †Pyramiodontherium Rovereto 1914
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†Pyramiodontherium bergi Moreno and Mercerat 1891
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Invalid names: Plesiomegatherium burmeisteri Moreno and Mercerat 1891 [synonym], Pyramiodontherium dubium Rovereto 1914 [synonym]
†Pyramiodontherium brevirostrum Carlini et al. 2002
†Pyramiodontherium carlesi Kraglievich 1930
†Pyramiodontherium remulsum Ameghino 1886
†Pyramiodontherium scillatoyanei De Iuliis et al. 2004
Invalid names: Xenocninae Paula Couto 1980 [synonym]
Unr. †Mylomorpha Ameghino 1885
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G. †Promegatherium Ameghino 1883
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†Promegatherium andinum Kraglievich 1930
†Promegatherium cabrerai Kraglievich 1930
†Promegatherium parvulum Ameghino 1891
†Promegatherium smaltatum Ameghino 1883
†Promegatherium smaltatus Ameghino 1883
Subfm. †Planopinae Ameghino 1887
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G. †Planops Ameghino 1887
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†Planops grandis Scillato-Yané and Carlini 1998
†Planops longirostratus Ameghino 1887
†Planops magnus Scott 1904
†Planops martini Hoffstetter 1961
†Planops obesus Ameghino 1891
G. †Prepotherium Ameghino 1891
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†Prepotherium filholi Ameghino 1891
†Prepotherium moyani Ameghino 1894
†Prepotherium potens Ameghino 1891
Subfm. †Prepotherinae Ameghino 1894
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Invalid names: Megatheriina Bonaparte 1850 [empty]