Articulata Cuvier see [unranked] Protostomia Grobben, 1908
   Annelida Lamarck, 1809 - segmented worms see Phylum Annelida Lamarck, 1809
     Polychaeta see Class Polychaeta Grube, 1850
       Palpata G.W. Rouse & K. Fauchald, 1997
         Canalipalpata G.W. Rouse & K. Fauchald, 1997
           Terebellida see Order Terebellida Rouse & Fauchald, 1977
             1.1.1 Family Acrocirridae K. Banse, 1969
             1.1.2 Family Flabelligeridae de Saint-Joseph, 1894
             1.2 Family Cirratulidae Ryckholt, 1851
             2.1.1.1 Family Alvinellidae Desbruyères & Laubier, 1986
             2.1.1.2 Family Ampharetidae Malmgren, 1865
             2.1.2 Family Pectinariidae de Quatrefages, 1865
             2.2.1 Family Terebellidae Grube, 1850
             2.2.2 Family Trichobranchidae Malmgren, 1865 see Family Terebellidae Grube, 1850
             3 Family Ctenodrilidae Kennel, 1882
             4 Family Fauveliopsidae Hartman, 1971
             5 Family Poeobiidae Heath, 1930
             6 Family Sternaspidae Carus, 1863