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
               1.1 Sorex arizonae Diersing & Hoffmeister, 1977 - Arizona shrew
               1.2 Sorex emarginatus Jackson, 1925
               1.3 Sorex merriami Dobson, 1890 - Merriam's shrew
               1.4 Sorex saussurei Merriam, 1892 - Saussure's shrew
               1.5 Sorex sclateri Merriam, 1897 - Sclater's shrew
               1.6 Sorex stizodon Merriam, 1895 - San Cristobal shrew
               1.7 Sorex trowbridgii Baird, 1857 - Trowbridge's shrew
               1.8 Sorex ventralis Merriam, 1895
               1.9 Sorex veraecrucis Jackson, 1925
               2.1 Subgenus Ognevia Heptner & Dolgov, 1967, nom. illeg.
               2.2 Subgenus Sorex Linnaeus, 1758
               3 Subgenus Otisorex De Kay, 1842