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 Protoplasta] see Kingdom Protozoa Goldfuss, 1818
               [Class Amoebae] see Order Amoebida
               [Class Arcellae] see Order Arcellinida Kent, 1880
               [Class Autamoebae]