Class Mammalia Linnaeus, 1758 - mammals
Count: 29o;11f;21g; ‡1f
   Subclass Theria Parker & Haswell, 1897
  Count: 28o;9f;21g; ‡1f
     Order Soricomorpha Gregory, 1910 see Suborder Soricomorpha Gregory, 1910
    Count: [*] 3f;43g;415s;266ss; ‡1f;2g;14s; †4g;2s
       Family Soricidae Fischer, 1814 - shrews
      Count: [*] 25g;374s;189ss; ‡1g;3s; †4g;2s
         Subfamily Soricinae Fischer, 1814
        Count: [*] 13g;146s;125ss; ‡1g;2s; †4g;1s
           Tribe Notiosoricini Reumer, 1984
          Count: [*†g] 2g;5s; †2g
             Genus Megasorex Hibbard, 1950 - giant Mexican shrew
            Count: [*] 1s
               1 Megasorex gigas (Merriam, 1897) - giant Mexican shrew
              Count: -