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
               01 Genus Pitar Römer, 1857
               02 Genus Amiantis Carpenter, 1864
               03 Genus Callista Poli, 1791
               04 Genus Callocardia Adams, 1864
               05 Genus Costacallista Palmer, 1927
               06 Genus Dollfusia Cossmann, 1886
               07 Genus Dosiniopsis Conrad, 1864
               08 Genus Lepidocardia Dall, 1902
               09 Genus Lioconcha Mörch, 1853
               10 Genus Megapitaria Grant & Gale, 1931
               11 Genus Notocallista Iredale, 1924
               12 Genus Pelecyora Dall, 1902
               13 Genus Saxidomus Conrad, 1837
               14 Genus Sinodiella Fischer-Piette & Delmas, 1967
               15 Genus Transenpitar Fischer-Piette & Testud, 1967