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 Buccinacea Rafinesque, 1815 see Superfamily Muricoidea Rafinesque, 1815
             Family Buccinidae Rafinesque, 1815 - whelks
               Subfamily Photinae Gray, 1857 see Subfamily Pisaniinae Gray, 1857
                 Genus Phos Montfort, 1810
                   1 Subgenus Phos (Phos) Montfort, 1810
                   2 Subgenus Phos (Strongylocera) Mörch, 1852