Kingdom Animalia Linnaeus, 1758 - animals Phylum Annelida Lamarck, 1809 - segmented worms Class Polychaeta Grube, 1850 - polychaetes Order Sabellida Fauchald, 1977 Family Spirorbidae (Chamberlin, 1919) Pillai, 1970 Genus Circeis de Saint-Joseph, 1894 Genus Paralaeospira Caullery & Mesnil, 1897 Genus Spirorbis Daudin, 1800