Annelida Lamarck, 1809 - segmented worms
   "polychaetes" see Class Polychaeta Grube, 1850
     Palpata G.W. Rouse & K. Fauchald, 1997
       Aciculata G.W. Rouse & K. Fauchald, 1997
         Phyllodocida see Order Phyllodocida Dales, 1962
           Nereidiformia see Suborder Nereidiformia
             1.1.1.1 Family Chrysopetalidae E. Ehlers, 1864
             1.1.1.2 Family Hesionidae Grube, 1850
             1.1.2 Family Nereididae Johnston, 1865
             1.2.1 Family Pilargidae de Saint-Joseph, 1895
             1.2.2 Genus Microphthalmus Mecznikow, 1865
             1.2.3 Genus Hesionides Friedrich, 1937
             2 Family Nautiliniellidae Miura & Laubier, 1990
             3 Family Syllidae Grube, 1850