Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             [Phylum "Chlamydiae" Garrity and Holt 2001 [monotypic]] see Phylum Chlamydiae Garrity and Holt 2012
               [Class "Chlamydiae"ᵀ Cavalier-Smith, 2002] see Class Chlamydiae Cavalier-Smith 2002