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 Eusyllinae Rioja, 1925
             1 Genus Amblyosyllis Grube, 1857
             2 Genus Eusyllis Malmgren, 1867
             3 Genus Odontosyllis Claparède, 1863
             4 Genus Ophisthodonta Langerhans, 1879 see Genus Opisthodonta Langerhans, 1879
             5 Genus Pionosyllis Malmgren, 1867
             6 Genus Streptosyllis Webster & Benedict, 1884
             7 Genus Syllides Örsted, 1845