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
               Subgenus Grammatodonax Dall, 1900