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 Opisthobranchia Milne-Edwards, 1848 - opisthobranchs see Order Opisthobranchia Milne-Edwards, 1848
    Count: [*] 8o;119f;463g [31 Oct 2021]
       Order Acochlidioidea Küthe, 1935 [monotypic] see Order Acochlidia Odhner, 1937
      Count: [*] 6f;15g [22 Oct 2021]
         Superfamily Euacochlidioidea nom. inval.
        Count: [*] 6f;15g [22 Oct 2021]
           Family Tantulidae Rankin, 1979 [monotypic]
          Count: [*] 1g [22 Oct 2021]
             1 Genus Antulum Millard, 1996, orth. inval. see Genus Tantulum Rankin, 1979
            Count: -