Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Biota
           Domain Bacteria Woese et al. 1990
             Superphylum Terrabacteria Battistuzzi et al. 2004
               Phylum "Actinobacteria" Garrity and Holt 2001
                 1.1.1.1 Class Actinobacteriaᵀ Stackebrandt et al. 1997
                 1.1.1.1.0 [Class Actinomycetes Krasil'nikov 1949 (Approved Lists 1980)] see Class Actinobacteria Stackebrandt et al. 1997
                 1.1.1.2 Class Nitriliruptoria Ludwig et al. 2013
                 1.1.2 Class Acidimicrobiia Norris 2013 [monotypic]
                 1.2 Class Coriobacteriia König 2013
                 2.1 Class Thermoleophilia Suzuki and Whitman 2013 [monotypic]
                 2.2 Class Rubrobacteria Suzuki 2013