Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Bivalvia Linnaeus, 1758 - bivalves
     Subclass Anomalodesmata Dall, 1889 [monotypic] see Order Anomalodesmata Dall, 1889
       Order Pholadomyida Newell, 1965
         Suborder Pholadomyina Newell, 1965 see Order Pholadomyida Newell, 1965
           Superfamily Pandoroidea Rafinesque, 1815
             Family Thraciidae Stoliczka, 1870 (1839)
               Genus Parvithracia Finlay, 1926