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 Heteroconchia Gray, 1854 see Superorder Heteroconchia Gray, 1854
           Superfamily Trigoniacea Lamarck, 1819 see Superfamily Trigonioidea Lamarck, 1819