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
Suborder Neotaenioglossa Haller, 1882
see Order Sorbeoconcha Ponder & Lindberg, 1997
Superfamily Littorinoidea Children, 1834
Family Littorinidae Children, 1834 - periwinkles
Subfamily Echinininae Rosewater, 1972 [monotypic]
see Subfamily Littorininae Children, 1834
Genus Echininus Clench & Abbott, 1942