Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Mollusca Linnaeus, 1758 - molluscs
     Subphylum Diasoma Runnegar & Pojeta Jr., 1974 see Phylum Mollusca Linnaeus, 1758
       Class Pelecypoda Goldfuss, 1820 see Class Bivalvia Linnaeus, 1758
         Subclass Isofilibranchia Iredale, 1939 see Superorder Isofilibranchia Iredale, 1939
           Genus Brachidontes Swainson, 1840
           Genus †Corallidomas see Genus Corallidomus Whitfield, 1893
           Genus †Corallidomus Whitfield, 1893
           Genus †Cymatonota Ulrich, 1893
           Genus †Fordilla Barrande, 1881
           Genus Geukensia van de Poel, 1959
           Genus †Leptosolen Conrad, 1865
           Genus †Liromytilus La Rocque, 1950
           Genus †Modiolodon Ulrich, 1894
           Genus †Modiolopsis Hall, 1847
           Genus Modiolus Lamarck, 1799
           Genus †Modiomorpha Hall, 1869
           Genus Mytilus Linnaeus, 1758
           Genus †Orthonota Conrad, 1841
           Genus †Pholadomorpha Foerste, 1914
           Genus †Promytilus Newell, 1942
           Genus †Volsellina Newell, 1942
           1 Family †Modiomorphidae Miller, 1877
           1.n Family Mytilidae Rafinesque, 1815 - marine mussels