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 Veneroidea Rafinesque, 1815
           Family Veneridae Rafinesque, 1815 - venus clams
             Subfamily Pitarinae Stewart, 1930 see Subfamily Callocardiinae Dall, 1895
               Genus Pitar Römer, 1857
                 01 Subgenus Pitar Römer, 1857
                 02 Subgenus Calpitaria Jukes-Browne, 1908
                 03 Subgenus Costellipitar Habe, 1951
                 04 Subgenus Hyphantosoma Dall, 1902
                 05 Subgenus Hysteroconcha Herrmannsen, 1847
                 06 Subgenus Katherinella Tegland, 1929
                 07 Subgenus Lamelliconcha Dall, 1902
                 08 Subgenus Nanopitar Rehder, 1943
                 09 Subgenus Paradione Dall, 1909
                 10 Subgenus Pitarella Palmer, 1927
                 11 Subgenus Pitarenus Rehder & Abbott, 1951
                 12 Subgenus Pitarina Jukes-Browne, 1913
                 13 Subgenus Tinctora Jukes-Browne, 1914