Phylum Mollusca Linnaeus, 1758 - molluscs
Class Gastropoda Cuvier, 1795 - snails and slugs
Subclass Opisthobranchia Milne-Edwards, 1848 - opisthobranchs
see Order Opisthobranchia Milne-Edwards, 1848
Order Acochlidioidea Küthe, 1935 [monotypic]
see Order Acochlidia Odhner, 1937
Superfamily Euacochlidioidea nom. inval.
Family Microhedylidae Odhner, 1937
see Family Parhedylidae Thiele, 1931
1 Genus Microhedyle Hertling, 1930
2 Genus Parahedyle Wirz-Mangold & Wyss, 1958, orth. inval.
see Genus Parhedyle Thiele, 1931
3 Genus Pontohedyle Golikov & Starobogatov, 1972
4 Genus Ganitus Marcus, 1953
5 Genus Paraganitus Challis, 1968