[Kingdom] Animalia Linnaeus, 1758 - animals
   Grade Plastidozoa [monotypic]
     [Phylum] Protozoa (Goldfuss, 1818) C.T. von Siebold, 1854 see Kingdom Protozoa Goldfuss, 1818
       Grade Gymnomyxa
         Class Gymnomyxa
           Order Flagellata see Class Flagellata
             1 Genus Monas Müller, 1773
             2 Genus Anthophysa Bory de Saint-Vincent, 1822