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 Sorex Linnaeus, 1758
                 Sorex minutus group
                   1 Sorex buchariensis Ognev, 1922
                   2 Sorex kozlovi Stroganov, 1952
                   3 Sorex minutus Linnaeus, 1766 - Eurasian pygmy shrew
                   4 Sorex planiceps Miller, 1911
                   5 Sorex thibetanus Kastschenko, 1905
                   6 Sorex volnuchini Ognev, 1922 - Caucasian pygmy shrew