Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [[crown] organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           [Kingdom Protista (Haeckel, 1866) - protists]
             [Phylum Protozoa (Goldfuss, 1818) C.T. von Siebold, 1854] see Kingdom Protozoa Goldfuss, 1818
               [Subphylum Sarcomastigophora] see Phylum Sarcomastigophora Honigberg & Balamuth, 1963
                 [Class Mastigophora Diesing, 1866] see Subphylum Mastigophora Diesing, 1866
                   [Family "Rhizomastigidae" Bütschli, 1883, nom. inval.]