protostomes see [unranked] Protostomia Grobben, 1908 Spiralia Schleip, 1929 - spiralians see Superphylum Spiralia Schleip, 1929 Lophotrochozoa Halanych, Bacheller, Aguinaldo, Liva, Hillis & Lake 1995 - lophotrochozoans Parenchymia [Phylum] Nemertea Schultze, 1851 - ribbon worms