Class Mammalia Linnaeus, 1758 - mammals
   Order Paucituberculata Ameghino, 1894
     Family Caenolestidae Trouessart, 1898 - "shrew" opossums
       Genus Caenolestes Thomas, 1895 - common "shrew" opossums
         1 Caenolestes caniventer Anthony, 1921
         2 Caenolestes convelatus Anthony, 1924
         3 Caenolestes fuliginosus (Tomes, 1863)