Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Bivalvia Linnaeus, 1758 - bivalves
     Subclass Heterodonta Neumayr, 1884 see Clade Heterodonta Neumayr, 1884
       Order Chamida see Order Venerida Gray, 1854
         Superfamily Tellinoidea Blainville, 1814
           Family Semelidae Stoliczka, 1870 (1825) - semelids
             01 Genus Semele Schumacher, 1817
             02 Genus Abra Lamarck, 1818
             03 Genus Cumingia Sowerby, 1833
             04 Genus Leptomya Adams, 1864
             05 Genus Montrouzieria Souverbie, 1863
             06 Genus Semelina Dall, 1900
             07 Genus Septeuilia Cossmann, 1913
             08 Genus Souleyetia Récluz, 1869
             09 Genus Theora Adams & Adams, 1856
             10 Genus Thyellisca Vokes, 1956