Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Bivalvia Linnaeus, 1758 - bivalves
     Subclass Pteriomorphia Beurlen, 1944 see Superorder Pteriomorphia Beurlen, 1944
       Order Mytilida Férussac, 1822 [monotypic]
         Suborder Mytilina Férussac, 1822 [monotypic] see Order Mytilida Férussac, 1822
           Superfamily Mytiloidea Rafinesque, 1815 [monotypic]
             Family Mytilidae Rafinesque, 1815 - marine mussels
               Subfamily Lithophaginae Adams & Adams, 1857 (1854)
                 1 Genus Lithophaga Röding, 1798
                 2 Genus Adula Adams & Adams, 1857
                 3 Genus Labis Dall, 1916
                 4 Genus Leiosolenus Carpenter, 1856
                 5 Genus Myapalmula Iredale, 1939
                 6 Genus Myoforceps Fischer, 1886
                 7 Genus Stumpiella Soot-Ryen, 1955
                 8 Genus Zelithophaga Finlay, 1927