Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Didelphimorphia Gill, 1872
       Family Didelphidae Gray, 1821 - American opossums
         Subfamily Caluromyinae Kirsch & Reig, 1977
           Genus Caluromys Allen, 1900 - woolly opossums
             Subgenus Mallodelphys Thomas, 1920
               Caluromys derbianus (Waterhouse, 1841) - Derby's woolly opossum
                 1 [Caluromys derbianus derbianus]ᵀ (Waterhouse, 1841)
                 2 Caluromys derbianus aztecus (Thomas, 1913)
                 3 Caluromys derbianus centralis (Hollister, 1914)
                 4 Caluromys derbianus fervidus (Thomas, 1913)
                 5 Caluromys derbianus nauticus (Thomas, 1913)
                 6 Caluromys derbianus pallidus (Thomas, 1899)