Classification of Abello et al. 2012
Or. Paucituberculata Ameghino 1894
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Fm. †Abderitidae Ameghino 1889
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Fm. Caenolestidae Trouessart 1898
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Fm. †Palaeothentidae Sinclair 1906
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G. †Palaeothentes Ameghino 1887
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†Palaeothentes aratae Moreno 1882
†Palaeothentes intermedius Ameghino 1887
†Palaeothentes minutus Ameghino 1887
†Palaeothentes pascuali Bown and Fleagle 1993
Fm. †Pichipilidae Marshall 1980
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Or. Microbiotheria Ameghino 1899
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Fm. Microbiotheriidae Ameghino 1887
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G. †Microbiotherium Ameghino 1887
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†Microbiotherium acicula Ameghino 1891
†Microbiotherium gallegosense Sinclair 1906
†Microbiotherium patagonicum Ameghino 1887
†Microbiotherium tehuelchum Ameghino 1887