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 Planorbioidea Vaught, 1989, orth. inval.
see Superfamily Planorboidea Rafinesque, 1815
Family Planorbidae Rafinesque, 1815 - planorbids
Subfamily Planorbinae Rafinesque, 1815
Tribe Drepanotremeae Zilch, 1959, orth. inval.
see Tribe Drepanotrematini Zilch, 1959
Genus Drepanotrema Crosse & Fischer, 1880