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 Pupilloidea Turton, 1831
Family Orculidae Pilsbry, 1918
Genus Orcula Held, 1837
Subgenus Pilorcula Germain, 1912