Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Paucituberculata Ameghino, 1894
       Family Caenolestidae Trouessart, 1898 - "shrew" opossums
         Genus Caenolestes Thomas, 1895 - common "shrew" opossums
           1 Caenolestes caniventer Anthony, 1921
           2 Caenolestes condorensis Albuja & Patterson, 1996
           3 Caenolestes convelatus Anthony, 1924
           4 Caenolestes fuliginosus (Tomes, 1863)