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?]
             Superphylum Terrabacteria Battistuzzi et al. 2004
               Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980)
                 Class Bacilli Ludwig et al. 2010
                   Order Bacillalesᵀ Prévot 1953 (Approved Lists 1980)
                     Family Thermoactinomycetaceae Matsuo et al. 2006
                       Genus Baia Guan et al. 2015
                       Genus Marinithermofilum Zhang et al. 2015
                       Genus Novibacillus Yang et al. 2015
                       Genus Risungbinella Kim et al. 2015
                       Genus Salinithrix Zarparvar et al. 2014
                       01 Genus Thermoactinomycesᵀ Tsilinsky 1899 (Approved Lists 1980)
                       02 Genus Desmospora Yassin et al. 2009 [monotypic]
                       03 Genus Geothermomicrobium Zhou et al. 2014 [monotypic]
                       04 Genus Kroppenstedtia von Jan et al. 2011
                       05.1 Genus Laceyella Yoon et al. 2005
                       05.2 Genus Hazenella Buss et al. 2013 [monotypic]
                       06 Genus Lihuaxuella Yu et al. 2013 [monotypic]
                       07 Genus Marininema Li et al. 2012
                       08 Genus Mechercharimyces Matsuo et al. 2006
                       09 Genus Melghirimyces Addou et al. 2012
                       10 Genus Planifilum Hatayama et al. 2005
                       11 Genus Polycladomyces Tsubouchi et al. 2013 [monotypic]
                       12 Genus Seinonella Yoon et al. 2005 [monotypic]
                       13 Genus Shimazuella Park et al. 2007 [monotypic]
                       14 Genus Thermoflavimicrobium Yoon et al. 2005 [monotypic]