Annelida Lamarck, 1809 - segmented worms "polychaetes" see Class Polychaeta Grube, 1850 Palpata G.W. Rouse & K. Fauchald, 1997 Aciculata G.W. Rouse & K. Fauchald, 1997 Phyllodocida see Order Phyllodocida Dales, 1962 Nereidiformia see Suborder Nereidiformia Family Hesionidae Grube, 1850 Genus [Sirsoe] Pleijel, 1998 1 Sirsoe grasslei (Blake, 1985) 2 Sirsoe methanicola (D. Desbruyères & A. Toulmond, 1998) - methane ice worm