Phylum Annelida Lamarck, 1809 - segmented worms Class Polychaeta Grube, 1850 - polychaetes Order Phyllodocida Dales, 1962 Superfamily Nereidoidea see Suborder Nereidiformia Family Nereididae Johnston, 1865 Subfamily Gymnonereidinae Banse, 1977 1 Genus Ceratocephale Malmgren, 1867