Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Soricomorpha Gregory, 1910 see Suborder Soricomorpha Gregory, 1910
       Family Soricidae Fischer, 1814 - shrews
         Subfamily Soricinae Fischer, 1814
           Tribe Soricini Fischer, 1814
             Genus Sorex Linnaeus, 1758 - long-tailed shrews
               Subgenus Otisorex De Kay, 1842
                 1.1 Sorex dispar Batchelder, 1911 - long-tailed shrew
                 1.2 Sorex gaspensis Anthony & Goodwin, 1924 - Gaspé shrew
                 2 Sorex fumeus G.M. Miller, 1895 - smoky shrew
                 3 Sorex hoyi Baird, 1857 - American pygmy shrew
                 4.1 Sorex nanus Merriam, 1895 - dwarf shrew
                 4.2 Sorex tenellus Merriam, 1895 - Inyo shrew
                 5.1 Sorex veraepacis Alston, 1877 - Verapaz shrew
                 5.2 Sorex macrodon Merriam, 1895 - large-toothed shrew
                 6.1 Sorex milleri Jackson, 1947 - Carmen Mountain shrew
                 6.2 Sorex cinereus group
                 7.1 Sorex oreopolus Merriam, 1892
                 7.2 Sorex orizabae Merriam, 1895
                 7.3 Sorex ornatus Merriam, 1895 - ornate shrew
                 7.4 Sorex vagrans complex