Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Divasibranchia Minichev & Starobogatov, 1975
       Order Stylommatophora Schmidt, 1855 see Infraorder Stylommatophora Schmidt, 1855
         Suborder Orthurethra Pilsbry, 1900
           Superfamily Cochlicopoidea Pilsbry, 1900 (1879)
             Family Amastridae Pilsbry, 1910
               Genus Leptachatina Gould, 1847
                 Subgenus Angulidens Pilsbry & Cooke, 1914