Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Mollusca Linnaeus, 1758 - molluscs
     Class Bivalvia Linnaeus, 1758 - bivalves
       Subclass Anomalodesmata Dall, 1889 see Order Anomalodesmata Dall, 1889
         Order Pholadomyoida Newell, 1965 see Order Pholadomyida Newell, 1965
           1 Family Cuspidariidae Dall, 1886
           2 Family Poromyidae Dall, 1886
           3 Family Pandoridae Rafinesque, 1815