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 Donacoidea Fleming, 1828 [monotypic] see Superfamily Tellinoidea Blainville, 1814
           Family Donacidae Fleming, 1828 - wedge shells
             Genus Donax Linnaeus, 1758
               01 Subgenus Chion Scopoli, 1777
               02 Subgenus Deltachion Iredale, 1930
               03 Subgenus Grammatodonax Dall, 1900
               04 Subgenus Hecuba Schumacher, 1817
               05 Subgenus Latona Schumacher, 1817
               06 Subgenus Machaerodonax Römer, 1870
               07 Subgenus Paradonax Cossmann, 1910
               08 Subgenus Plebidonax Iredale, 1930
               09 Subgenus Tembrockia Glibert & van de Poel, 1967
               10 Subgenus Tentidonax Iredale, 1930