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
         Aciculata G.W. Rouse & K. Fauchald, 1997
           Eunicida see Order Eunicida Ushakov, 1955
             1.1 Family Amphinomidae Savigny, 1818
             1.2 Family Euphrosinidae Williams, 1851
             2.1.1.1 Family Dorvilleidae Chamberlin, 1919
             2.1.1.2 Family Lumbrineridae Schmarda, 1865
             2.1.2 Family Eunicidae Savigny, 1818
             2.2 Family Onuphidae Kinberg, 1865
             3 Family Diurodrilidae Kristensen & Niilonen, 1982
             4 Family Hartmaniellidae M. Imajima, 1977
             5 Family Histriobdellidae Vaillant, 1890
             6 Family Oenonidae Kinberg, 1865