Phylum [Mollusca] Linnaeus, 1758 - molluscs
   Class Bivalvia Linnaeus, 1758 - bivalves
     1 Order Arcoida see Order Pteriomorpha Beurlen, 1944
     2 Order Veneroida H. & A. Adams, 1856 see Order Venerida Gray, 1854
     3 Order Mytiloida Férussac, 1822 see Order Mytilida Férussac, 1822
     4 Order Myoida Stoliczka, 1870 see Order Myida Stoliczka, 1870
     5 Order Pholadomyoida Newell, 1965 see Order Pholadomyida Newell, 1965
     6 Order Hippuritoida