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 Crenellinae Gray, 1840
                 01 Genus Crenella Brown, 1827
                 02 Genus Arcoperna Conrad, 1865
                 03 Genus Arvella Scarlato, 1960
                 04 Genus Gregariella Monterosato, 1883
                 05 Genus Megacrenella Habe & Ito, 1965
                 06 Genus Modiolarca Gray, 1842
                 07 Genus Musculista Yamamoto & Habe, 1958
                 08 Genus Musculus Röding, 1798
                 09 Genus Rhomboidella Monterosato, 1884
                 10 Genus Semimodiola Cossmann, 1887
                 11 Genus Solamen Iredale, 1924
                 12 Genus Vignadula Kuroda & Habe, 1971