Phylum [Mollusca] Linnaeus, 1758 - molluscs
Class Gastropoda Cuvier, 1795 - snails and slugs
Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs
see Class Gastropoda Cuvier, 1795
Order Mesogastropoda Thiele, 1925 - mesogastropods
see [unranked] mesogastropods
Suborder Taenioglossa
see Order Mesogastropoda Thiele, 1925
Superfamily Littorinacea Gray, 1840
see Superfamily Littorinoidea Children, 1834
Family Littorinidae Children, 1834 - periwinkles
Subfamily Echinininae Rosewater, 1972
see Subfamily Littorininae Children, 1834
1 Genus Echininus Clench & Abbott, 1942