Classification of Simpson et al. 1962

Or. †Notoungulata Roth 1903 [notoungulate]
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Fm. †Hegetotheriidae Ameghino 1894
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Subfm. †Hegetotheriinae Ameghino 1894
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G. †Ethegotherium Simpson et al. 1962
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†Ethegotherium carettei Minoprio 1947
Fm. †Mesotheriidae Alston 1876
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Invalid names: Trachytherinae Ameghino 1889 [empty]
Fm. †Oldfieldthomasiidae Simpson 1945
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G. †Allalmeia Rusconi 1946
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†Allalmeia atalaensis Rusconi 1946
G. †Brachystephanus Simpson et al. 1962
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†Brachystephanus postremus Simpson et al. 1962
G. †Xenostephanus Simpson et al. 1962
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†Xenostephanus chiottii Simpson et al. 1962
Or. †Litopterna Ameghino 1889
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Fm. †Adianthidae Ameghino 1891
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G. †Adiantoides Simpson and Minoprio 1949
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†Adiantoides leali Simpson and Minoprio 1949
Fm. †Proterotheriidae Ameghino 1887
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G. †Phoradiadius Simpson et al. 1962
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†Phoradiadius divortiensis Simpson et al. 1962
Superor. Ungulata Linnaeus 1766
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G. †Acamana Simpson et al. 1962
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†Acamana ambiguus Simpson et al. 1962
Or. Marsupialia Illiger 1811 [marsupial]
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Invalid names: Groeberiidae Patterson 1952 [empty]