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 Chloroflexiaᵀ corrig. Gupta et al. 2013
                   1 Order Chloroflexalesᵀ Gupta et al. 2013
                   2 Order Herpetosiphonales Gupta et al. 2013 [monotypic]
                   3 Order Kallotenuales Cole et al. 2013 [monotypic]
                   4 Order "Candidatus Thermobaculales" Chuvochina et al. 2023 nom. pro-inval. [monotypic]