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 Heterobranchia Burmeister, 1837 [monotypic] see Superorder Heterobranchia Burmeister, 1837
    Count: [*†*] 1o;15f;117g; †1g [18 Oct 2021]
       Order Heterostropha Fischer, 1885
      Count: [*†*] 15f;117g; †1g [18 Oct 2021]
         Superfamily Pyramidelloidea Gray, 1840
        Count: [*] 4f;70g [18 Oct 2021]
           Family Pyramidellidae Gray, 1840
          Count: [*] 61g [18 Oct 2021]
             Genus Mormulasta Laseron, 1959
            Count: -