Metazoa see Kingdom Animalia Linnaeus, 1758 Gastraeozoa Trochaeozoa see [unranked] Bilateria Hatschek, 1888 Gastroneuralia Ulrich, 1951 Aschelminthes Grobben, 1910 see [unranked] Protostomia Grobben, 1908 Phylum Rotifera Cuvier, 1798 - rotifers see Phylum Syndermata Ahlrichs, 1995