Phylum Mollusca Linnaeus, 1758 - molluscs
Class Gastropoda Cuvier, 1795 - snails and slugs
Subclass Divasibranchia Minichev & Starobogatov, 1975
Order Basommatophora Keferstein, 1865
see Suborder Basommatophora Keferstein, in Bronn, 1864
Superfamily Lymnaeoidea Rafinesque, 1815
Family Lymnaeidae Rafinesque, 1815
Genus Stagnicola Jeffreys, 1830
Subgenus Polyrhitis orth. inval.
see Subgenus Polyrhytis Meek, 1876