Phylum Annelida Lamarck, 1809 - segmented worms Class Polychaeta Grube, 1850 - polychaetes Order Phyllodocida Dales, 1962 Superfamily Nereidoidea see Suborder Nereidiformia Family Syllidae Grube, 1850 Subfamily Exogoninae Rioja, 1925 Genus Exogone Ørsted, 1845 Subgenus Exogone Ørsted, 1845 see Genus Exogone Ørsted, 1845