Class Gastropoda Cuvier, 1795 - snails and slugs
Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs
see Class Gastropoda Cuvier, 1795
Order Archaeogastropoda Thiele, 1925
see Order Vetigastropoda Salvini-Plawen, 1980
Superfamily Trochacea
see Superfamily Trochoidea Rafinesque, 1815
Family Cyclostrematidae Fischer, 1885
see Subfamily Liotiinae Gray, 1850
Genus Circulus Jeffreys, 1865
1 †Circulus rakhiensis F.E. Eames, 1952