Phylum Annelida Lamarck, 1809 - segmented worms Class Polychaeta Grube, 1850 - polychaetes Order Phyllodocida Dales, 1962 Superfamily Nereidoidea see Suborder Nereidiformia Family Hesionidae Grube, 1850 Subfamily Hesioninae (Grube, 1850) Hartmann-Schröder, 1971 see Family Hesionidae Grube, 1850 Genus Kefersteinia Quatrefages, 1865