Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Bivalvia Linnaeus, 1758 - bivalves
     Subclass Pteriomorphia Beurlen, 1944 see Superorder Pteriomorphia Beurlen, 1944
       Order Ostreida Férussac, 1822
         Suborder Pectinina Gray, 1854 see Order Pectinida Gray, 1854
           Superfamily Anomioidea Rafinesque, 1815
             Family Placunidae Rafinesque, 1815
               1 Genus Placuna Solander, 1786
               2 Genus Placunanomia Broderip, 1832