Phylum Mollusca Linnaeus, 1758 - molluscs
Class Gastropoda Cuvier, 1795 - snails and slugs
Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs
see Class Gastropoda Cuvier, 1795
Order Caenogastropoda Cox, 1960
see Superorder Caenogastropoda Cox, 1960
Superfamily Rissooidea Gray, 1847
Family Ctiloceratidae Iredale & Laseron, 1957
see Subfamily Ctiloceratinae Iredale & Laseron, 1957
Subfamily Pedumicrinae Iredale & Laseron, 1957
see Subfamily Ctiloceratinae Iredale & Laseron, 1957
1 Genus Parastrophia Folin, 1869
2 Genus Thecopsella Munier-Chalmas, 1888