Polychaeta Grube, 1850
Acoetidae Kinberg, 1856
Alciopidae Ehlers, 1864
Antonbruunidae Fauchald, 1977
Aphroditidae Malmgren, 1867
Chrysopetalidae Ehlers, 1864
Eulepethidae Chamberlin, 1919
Glyceridae Grube, 1850
Goniadidae Kinberg, 1866
Hesionidae Grube, 1850
Iospilidae Bergstroem, 1914
Lacydoniidae Bergstroem, 1914
Levidoridae
Lopadorhynchidae Claparede, 1868
Lopadorrhynchidae Claparède, 1868
Microphthalmidae
Nautiliniellidae Miura & Laubier, 1990
Nephtyidae Grube, 1850
Nereididae Johnston, 1865
Paralacydoniidae Pettibone, 1963
Pholoidae Kinberg, 1858
Phyllodocidae Oersted, 1843
Pilargidae Saint-Joseph, 1899
Pisionidae Southern, 1914
Polynoidae Malmgren, 1867
Pontodoridae Bergstroem, 1914
Protopholoe Alessandrello, Bracchi & Riou, 2004
Sigalionidae Malmgren, 1867
Sphaerodoridae Malmgren, 1867
Syllidae Grube, 1850
Tomopteridae Johnston, 1865
Typhloscolecidae Uljanin, 1878
Yndolaciidae
