Phylum Mollusca Linnaeus, 1758 - molluscs
Count: [*†*] 8c;49o;641f;6099g; †2f;162g [24 Jan 2022]
   Class Gastropoda Cuvier, 1795 - snails and slugs
  Count: [*] 21o;416f;4650g; †136g [13 Dec 2021]
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
    Count: [*†*] 6o;172f;2489g; †135g [14 Oct 2021]
       Superorder Archaeogastropoda Thiele, 1925
      Count: [*†*] 3o;37f;400g; †25g [28 Jun 2021]
         Order Vetigastropoda Salvini-Plawen, 1980 - archaeogastropods s.l.
        Count: [*†*] 20f;341g; †25g [28 Jun 2021]
           Suborder Neritopsina Cox, 1960 see Order Neritopsina Cox & Knight, 1960
          Count: [*] 9f;59g [28 Jun 2021]
             Superfamily Helicinoidea Férussac, 1822
            Count: [*] 3f;34g [28 Jun 2021]
               1 Family Helicinidae Férussac, 1822 - helicinids
              Count: [*] 28g [28 Jun 2021]
               2 Family Proserpinidae Gray, 1847 [monotypic]
              Count: [*] 1g [28 Jun 2021]
               3 Family Ceresidae Thiele, 1925 see Family Proserpinellidae Baker, 1923
              Count: [*] 5g [28 Jun 2021]