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
                 Sorex cinereus group
                   01 Sorex camtschatica Yudin, 1972
                   02 Sorex cinereus Kerr, 1792 - masked shrew
                   03 Sorex haydeni Baird, 1857 - prairie shrew
                   04 Sorex jacksoni Hall & Gilmore, 1932 - barrenground shrew
                   05 Sorex leucogaster Kuroda, 1933
                   06 Sorex longirostris Bachman, 1837 - southeastern shrew
                   07 Sorex lyelli Merriam, 1902 - Mount Lyell shrew
                   08 Sorex portenkoi Stroganov, 1956
                   09 Sorex preblei Jackson, 1922 - Preble's shrew
                   10 Sorex pribilofensis Merriam, 1895
                   11 Sorex ugyunak Anderson & Rand, 1945 - barren ground shrew