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]
           [Domain Eucaryota]
             [Subdomain Chlorota Doweld (2001)]
               [Kingdom Bacillariobiota Doweld (2001)]
                 [Subkingdom Bacillariobiotinaᵀ Doweld (2001)]
                   [Phylum Raphidomonadophyta Doweld (2001)]
                     [Subclass Raphidomonadophycidaeᵀ Doweld (2001) [monotypic]]