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)
               1 Genus Thracia Blainville, 1824
               2 Genus Asthenothaerus Carpenter, 1864
               3 Genus Bushia Dall, 1886
               4 Genus Cyathodonta Conrad, 1849
               5 Genus Parvithracia Finlay, 1926
               6 Genus Phragmorisma Tate, 1893
               7 Genus Thracidora Iredale, 1924
               8 Genus Thraciopsis Tate & May, 1900