Polychaeta Grube, 1850
Aberrantidae Wolf, 1987
Apistobranchidae Mesnil & Caullery, 1898
Chaetopteridae Audouin & Milne-Edwards, 1833
Heterospionidae
Longosomatidae Hartman, 1944
Magelonidae Cunningham & Ramage, 1888
Poecilochaetidae Hannerz, 1956
Spionidae Grube, 1850
Trochochaetidae Pettibone, 1963
Uncispionidae Green, 1982
