Classification of Goin et al. 2007

Cl. Mammalia Linnaeus 1758 [mammal]
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Invalid names: Necrolestidae Ameghino 1894 [empty]
Subcl. Metatheria Huxley 1880 [metatherian]
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Unr. Marsupialia Illiger 1811 [marsupial]
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Or. Didelphimorphia Gill 1872
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Superfm. Didelphoidea Gray 1821
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Fm. Caluromyidae Kirsch and Reig 1977
Fm. Didelphidae Gray 1821 [opossum]
Or. †Sparassodonta Ameghino 1894
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Fm. †Borhyaenidae Savage 1951
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Subfm. †Borhyaeninae Ameghino 1894
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G. †Acrocyon Ameghino 1887
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†Acrocyon riggsi Sinclair 1930
G. †Arctodictis Mercerat 1891
G. †Borhyaena Ameghino 1887
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†Borhyaena macrodonta Ameghino 1902
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Invalid names: Pseudoborhyaena longaeva Ameghino 1902 [synonym]
Subfm. †Prothylacyninae Ameghino 1894
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G. †Pseudothylacynus Ameghino 1902
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†Pseudothylacynus rectus Ameghino 1902
Fm. †Hathliacynidae Ameghino 1894
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G. †Cladosictis Ameghino 1887
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†Cladosictis centralis Ameghino 1902
G. †Sipalocyon Ameghino 1887
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†Sipalocyon externus Ameghino 1902