fossil marine animal genera Linnaeus, 1758 - animals
   Phylum Mollusca Linnaeus, 1758 - molluscs
     Class Bivalvia Linnaeus, 1758 - bivalves
       01 Order Nuculoida - nut clams see Order Nuculida Dall, 1889
       02 Order Solemyoida Dall, 1889 see Order Solemyida Dall, 1889
       03 Order †Praecardioida Newell, 1965
       04 Order Arcoida see Order Pteriomorpha Beurlen, 1944
       05 Order Mytiloida Férussac, 1822 see Order Mytilida Férussac, 1822
       06 Order Pterioida Newell, 1965 see Order Pteriida Newell, 1965
       07 Order †Modiomorphoida
       08 Order Unionoida see Order Unionida Gray, 1854
       09 Order Trigonioida see Order Trigoniida Dall, 1889
       10 Order Veneroida H. & A. Adams, 1856 see Order Venerida Gray, 1854
       11 Order Myoida Stoliczka, 1870 see Order Myida Stoliczka, 1870
       12 Order Hippuritoida
       13 Order Pholadomyoida Newell, 1965 see Order Pholadomyida Newell, 1965
       14 Order †uncertain