Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Bivalvia Linnaeus, 1758 - bivalves
     Subclass Heterodonta Neumayr, 1884 see Clade Heterodonta Neumayr, 1884
       Order Chamida see Order Venerida Gray, 1854
         Superfamily Tellinoidea Blainville, 1814
           Family Pharidae Adams & Adams, 1856
             Subfamily Cultellinae Davies, 1935
               Genus Phaxas Leach, 1852
                 Subgenus Ensiculus Adams, 1860