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
             [Phylum "Spirochaetes" Garrity and Holt 2001 nom. inval. [monotypic]] see Phylum Spirochaetota Garrity and Holt 2021
               1 Class Spirochaetesᵀ Cavalier-Smith 2002 nom. rej. [monotypic]
               1.0 [Class "Spirochaetes"ᵀ "Garrity and Holt 2001" nom. nud.] see Class Spirochaetes Cavalier-Smith 2002 nom. rej.