Mollusca Linnaeus, 1758 - molluscs see Phylum Mollusca Linnaeus, 1758
Count: 410f; †195f
   Gastropoda Cuvier, 1795 see Class Gastropoda Cuvier, 1795
  Count: [f†f] 410f; †172f
     Clade Heterobranchia Burmeister, 1837 see Superorder Heterobranchia Burmeister, 1837
    Count: [f†f] 238f; †29f
       Informal Group "Lower Heterobranchia"
      Count: [f†f] 19f; †21f
         Superfamily Pyramidelloidea Gray, 1840
        Count: [f†f] 3f; †1f
           Family Pyramidellidae Gray, 1840
          Count: -
             Subfamily Syrnolinae Saurin, 1958
            Count: -
               Tribe Tiberiini Saurin, 1958
              Count: -