Natura - nature
  
 actualia - actual entities
    
 Mundus Plinius - physical world
      
 naturalia - natural bodies
        
 Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
          
 Clade neomura Cavalier-Smith, 1987
            
 Domain Eukaryota Chatton, 1925 - eukaryotes
              
 Clade discaria Cavalier-Smith, 2021
                
 Clade natates Cavalier-Smith, 2021
                  
 Clade photaria Cavalier-Smith, 2021
                    
 Clade eucorta Cavalier-Smith, 2021
                      
 Superkingdom Corticata Lankester, 1878 - corticates
                        
 Kingdom Chromista Caval.-Sm. (1981) - chromists
                          
 Subkingdom Harosa Cavalier-Smith, 2010
                            
 Clade Sar Adl et al. 2012 [Simpson & Dunthorn 2020]
                              
 Infrakingdom Halvaria Cavalier-Smith, 2010
                                
 Superphylum Alveolata Cavalier-Smith, 1991
                                  
 Phylum Ciliophora Doflein, 1901 - ciliates
                                    
 Subphylum Intramacronucleata Lynn, 1996 - amphiesmates
                                      
 [Superclass Spirotricha Bütschli, 1889]
 see Class Spirotrichea Bütschli, 1889
                                        
 [Class Oligotrichea Bütschli, 1889]
 see Subclass Oligotrichia Bütschli, 1889
                                          
 1 [Subclass Halteriia Petz & Foissner, 1992]
 see Order Halteriida Petz & Foissner, 1992