Annelida Lamarck, 1809 - segmented worms
   "polychaetes" see Class Polychaeta Grube, 1850
     Palpata G.W. Rouse & K. Fauchald, 1997
       Aciculata G.W. Rouse & K. Fauchald, 1997
         Phyllodocida see Order Phyllodocida Dales, 1962
           Aphroditiformia see Suborder Aphroditiformia Levinsen, 1883
             1.1.1 Aphroditoidea Malmgren, 1867
             1.1.2 Family Sigalionidae Kinberg, 1856
             1.2 Family Pholoidae Kinberg, 1858
             2 Family Pisionidae Ehlers, 1901