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
               [Grade Gymnomyxa]
                 [Class Gymnomyxa]
                   1 [Order Homogenea]
                   2 [Order Reticularia (Frederiks, 1915)]
                   3 [Order Amœboidea]
                   5 [Order Catallacta]