Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Didelphimorphia Gill, 1872
       Family Didelphidae Gray, 1821 - American opossums
         Subfamily Didelphinae Gray, 1821
           Genus Micoureus Lesson, 1842
             Micoureus paraguayanus (Tate, 1931) - Tate's woolly mouse opossum
               1 [Micoureus paraguayanus paraguayanus]ᵀ (Tate, 1931)
               2 Micoureus paraguayanus travassosi (Miranda-Ribeiro, 1936)