After McKenna & Bell, 1997, with recent species from Nowak, 1991

<==o Scapteromyini Massoia, 1979
   |--o Scapteromys Waterhouse, 1837 [Mus (Scapteromys) Waterhous, 1837; Scapteromys Fitzinger, 1867] L.Plioc.-R. SA.
   |  `-- S. tumidus (argentiinanvesirotta)
   |--o Kunsia Hershkovitz, 1966; Pleist.-R. SA.
   |  |-- K. fronto
   |  `-- K. tomentosus
   `--o Bibimys Massoia, 1979; Pleist.-R. SA.
      |-- B. torresi
      |-- B. labiosus
      `-- B. chacoensis

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