living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Mammalia Linnaeus, 1758 - mammals
               Subclass Theria Parker & Haswell, 1897
                 Infraclass Metatheria Huxley, 1880
                   Superorder Marsupialia Jameson, 1818 see Cohort Marsupialia Jameson, 1818
                     Order Paucituberculata Ameghino, 1894
                       Family Caenolestidae Trouessart, 1898 - "shrew" opossums
                         1 Genus Caenolestes Thomas, 1895 - common "shrew" opossums
                         2 Genus Lestoros Oehser, 1934
                         3 Genus Rhyncholestes Osgood, 1924 - Chilean "shrew" opossums