Phylum Annelida Lamarck, 1809 - segmented worms
   Class Polychaeta Grube, 1850 - polychaetes
     Order Phyllodocida Dales, 1962
       Superfamily Nereidoidea see Suborder Nereidiformia
         Family Syllidae Grube, 1850
           Subfamily Exogoninae Rioja, 1925
             1 Genus Brania de Quatrefages, [1866]
             2 Genus Exogone Ørsted, 1845
             3 Genus Sphaerosyllis Claparède, 1863