Annelida Lamarck, 1809 - segmented worms
   "polychaetes" see Class Polychaeta Grube, 1850
     Scolecida G.W. Rouse & K. Fauchald, 1997 see Order Scolecida Rouse & Fauchald, 1997
       Family Arenicolidae Johnston, 1835
         Genus Arenicola Lamarck, 1801
           1 Arenicola marina (Linnaeus, 1758)
           2 Arenicola cristata Stimpson, 1856
           3 Arenicola vagabunda see Abarenicola vagabunda Healy & Wells, 1959
           4 Arenicola brasiliensis (Nonato, 1958)
           5 Arenicola defodiens Cadman & Nelson-Smith, 1993