Phylum [Mollusca] Linnaeus, 1758 - molluscs
Class Gastropoda Cuvier, 1795 - snails and slugs
Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs
see Class Gastropoda Cuvier, 1795
Order Neogastropoda Wenz, 1938
see Suborder Neogastropoda Wenz, 1938
Suborder Rachiglossa (Gray, 1853)
see Superfamily Muricacea de Costa, 1776
Superfamily Volutacea Rafinesque, 1815
see Superfamily Muricoidea Rafinesque, 1815
Family Costellariidae MacDonald, 1860
Genus Vexillum Röding, 1798
Subgenus Vexillum (Pusia) Swainson, 1840