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
         (Helicid Sigmurethra)
           Superfamily Helicoidea Rafinesque, 1815
             Family Helicidae Rafinesque, 1815
               Subfamily Helicinae Rafinesque, 1815
                 Genus Alabastrina Kobelt, 1904
                   1 Subgenus Atlasica Pallary, 1917
                   2 Subgenus Guilia Pallary, 1926
                   3 Subgenus Lechatelieria Pallary, 1926
                   4 Subgenus Loxana Bourguignat, 1898
                   5 Subgenus Michaudia Pallary, 1926, nom. illeg.
                   6 Subgenus Siretia Pallary, 1926
                   7 Subgenus Tingitana Pallary, 1918