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 Blarinini Stirton, 1930
             Genus Cryptotis Pomel, 1848 - small-eared shrews
               Cryptotis mexicana group
                 1 Cryptotis goldmani subset
                 2 Cryptotis mexicana (Coues, 1877) - Mexican small-eared shrew
                 3 Cryptotis nelsoni (Merriam, 1895)
                 4 Cryptotis obscura (Merriam, 1895)
                 5 Cryptotis phillipsii (Schaldach, 1966)