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 dorsates Cavalier-Smith, 2021
                  
 Clade podiates Cavalier-Smith, 2012
                    
 Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
                      
 Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
                        
 Clade Opisthokonta Cavalier-Smith 1987 [Simpson & Medina 2020] - animal-fungal clade
                          
 Superkingdom Holozoa Lang, O'Kelly, Nerad, Gray & Burger, 2002
                            
 Clade filozoa Shalchian-Tabrizi, Minge, Espelund, Orr, Ruden, Jakobsen & Cavalier-Smith, 2008
                              
 Kingdom Animalia Linnaeus, 1758 - animals
                                
 Clade Planulozoa Wallberg, Thollesson, Farris & Jondelius 2004
                                  
 Subkingdom Bilateria Hatschek, 1888 - bilaterians
                                    
 Clade Nephrozoa Jondelius, Ruiz-Trillo, Baguñà & Riutort 2002
                                      
 Infrakingdom Protostomia Grobben, 1908
                                        
 Superphylum Spiralia Schleip, 1929
                                          
 Clade Platytrochozoa Struck, Wey-Fabrizius, Golombek, Hering, Weigert, Bleidorn, Klebow, Iakovenko, Hausdorf, Petersen, Kück, Herlyn & Hankeln 2014
                                            
 Clade Rouphozoa Struck, Wey-Fabrizius, Golombek, Hering, Weigert, Bleidorn, Klebow, Iakovenko, Hausdorf, Petersen, Kück, Herlyn & Hankeln 2014
                                              
 Phylum Platyhelminthes Gegenbaur, 1859 - flatworms
                                                
 Subphylum Rhabditophora Ehlers, 1985
                                                  
 Class Polycladidea
                                                    
 Order Polycladida Lang, 1884
                                                      
 Suborder Acotylea Lang, 1884
                                                        
 Section Craspedommata
                                                          
 Family Plehniidae Bock, 1913
                                                            
 Genus Cryptophallus Bock, 1913
                                                            
 Genus Discocelides Bergendal, 1893
                                                            
 Genus Discostylochus Bock, 1926
                                                            
 Genus Idioplana Woodworth, 1898
                                                            
 Genus Kaburakia Bock, 1925
                                                            
 Genus Leptostylochus Bock, 1925
                                                            
 Genus Microstylochus
                                                            
 Genus Neostylochus Yeri & Kaburaki, 1920
                                                            
 Genus Paraplehnia Hyman, 1953
                                                            
 Genus Plehniaᵀ Bock, 1913