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. 2024
             Kingdom Bacillatiᵀ (Gibbons and Murray 1978) Oren and Göker 2024
               Phylum Chloroflexota Garrity and Holt 2021
                 Class "Candidatus Thermofontia" corrig. Ward et al. 2020 [monotypic]
                   Order "Phototrophicales" Zheng et al. 2022 nom. inval. [monotypic]
                     Family "Phototrophicaceae"ᵀ Zheng et al. 2022 nom. inval. [monotypic]
                       1 Genus "Phototrophicus"ᵀ Zheng et al. 2022 nom. inval.