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 Stenoglossa Bouvier, 1887
Superfamily Muricoidea Rafinesque, 1815
Family Turbinellidae Swainson, 1835
Subfamily Ptychatractinae Stimpson, 1865
see Family Ptychatractidae Stimpson, 1865
Genus Ptychatractus Stimpson, 1865
1 Subgenus Piestochilus Meek, 1864