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 Nematomorpha Vejdovsky, 1886 - horsehair worms