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 tundrensis group
Sorex tundrensis Merriam, 1900 - tundra shrew