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]
           [Domain "Bacteria" Woese et al. 1990 stat. inval. [paraphyletic?]] see Domain Bacteria Woese et al. 2024
             [Superphylum Planctomycetes-Verrucomicrobia-Chlamydiae (PVC) Wagner and Horn 2006]
               [Phylum "Verrucomicrobia" Hedlund 2012 stat. inval.] see Phylum Verrucomicrobiota Hedlund 2021
                 Class "Spartobacteria" Sangwan et al. 2004 [monotypic]
                   [Family "Candidatus Xiphinematobacteraceae" "Janssen 2006" nom. pro-inval.] see Family Chthoniobacteraceae Sangwan et al. 2004 nom. inval.