bilaterians Hatschek, 1888 - bilaterians see Subkingdom Bilateria Hatschek, 1888 Count: - Spiralia Schleip, 1929 - spiralians see Superphylum Spiralia Schleip, 1929 Count: - Mesozoa van Beneden, 1876 Count: - Orthonectida Giard, 1880 see Phylum Orthonectida Giard, 1880 Count: -