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 Actinomycetota Goodfellow 2021
                 01 Genus "Acidithiomicrobium" Davis-Belmar and Norris 2009 nom. inval., incertae sedis
                 02 Order "Candidatus Actinomarinales" Ghai et al. 2020, incertae sedis [monotypic]
                 03 Order "Candidatus Hakubellales" corrig. Merino et al. 2022, incertae sedis [monotypic]
                 04 Order "Candidatus Nanopelagicales" Neuenschwander et al. 2020, incertae sedis [monotypic]
                 05 Class Acidimicrobiia Norris 2013
                 06 Class Actinomycetesᵀ Krassilnikov 1949 (Approved Lists 1980)
                 07 Class Coriobacteriia König 2013
                 08 Class Nitriliruptoria Ludwig et al. 2013
                 09 Class Rubrobacteria Suzuki 2013 [monotypic]
                 10 Class Thermoleophilia Suzuki and Whitman 2013
                 11 Class "Candidatus Aquicultoria" Jiao et al. 2021 nom. pro-inval.
                 12 Class "Candidatus Geothermincolia" Jiao et al. 2021 nom. pro-inval. [monotypic]
                 13 Class "Candidatus Humimicrobiia" Jiao et al. 2021 nom. pro-inval. [monotypic]