Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Bivalvia Linnaeus, 1758 - bivalves
     Subclass Heterodonta Neumayr, 1884 see Clade Heterodonta Neumayr, 1884
       Order Myida Stoliczka, 1870
         Suborder Myina Stoliczka, 1870 see Superfamily Myoidea Lamarck, 1809
           Superfamily Gastrochaenoidea Gray, 1840 [monotypic]
             Family Gastrochaenidae Gray, 1840 - rock borers
               Genus Lamychaena Freneix, 1979