Annelida Lamarck, 1809 - segmented worms
   "polychaetes" see Class Polychaeta Grube, 1850
     Palpata G.W. Rouse & K. Fauchald, 1997
       Canalipalpata G.W. Rouse & K. Fauchald, 1997
         1 Sabellida see Order Sabellida Fauchald, 1977
         2 Terebellida see Order Terebellida Rouse & Fauchald, 1977
         3 Spionida see Order Spionida Rouse & Fauchald, 1997
         4 Family Polygordiidae Czerniavsky, 1881
         5 Protodrilida Pettibone, 1982 see Order Protodrilida