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
           Caenolestes fuliginosus (Tomes, 1863)
             1 [Caenolestes fuliginosus fuliginosus]ᵀ (Tomes, 1863)
             2 Caenolestes fuliginosus centralis Bublitz, 1987
             3 Caenolestes fuliginosus obscurus Thomas, 1895