Phylum Annelida Lamarck, 1809 - segmented worms Class Polychaeta Grube, 1850 - polychaetes Order Chaetopterida see Order Spionida Rouse & Fauchald, 1997 Family Chaetopteridae Malmgren, 1867 1 Genus Chaetopterus Cuvier, 1830 2 Genus Spiochaetopterus M. Sars, 1853