Phylum [Mollusca] Linnaeus, 1758 - molluscs
   Class Bivalvia Linnaeus, 1758 - bivalves
     Order Mytiloida Férussac, 1822 see Order Mytilida Férussac, 1822
       Superfamily Pteriacea Gray, 1847 see Superfamily Pterioidea Gray, 1847 (1820)
         Family Isognomonidae Woodring, 1925 (1828)
           Genus Isognomon Solander, 1786
             Subgenus Isognomon (Isognomon) Solander, 1786 see Genus Isognomon Solander, 1786