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 Bacillotaᵀ Gibbons and Murray 2021
                 Class Clostridia Rainey 2010
                   Order Eubacteriales Buchanan 1917 (Approved Lists 1980)
                     Family "Sulfobacillaceae" Cavalier-Smith and Chao 2020 nom. inval. [monotypic]
                       Genus Sulfobacillusᵀ Golovacheva and Karavaiko 1991
                         1 Sulfobacillus acidophilus Norris et al. 1996
                         2 Sulfobacillus benefaciens Johnson et al. 2009
                         3 Sulfobacillus sibiricus Melamud et al. 2006
                         4 Sulfobacillus thermosulfidooxidansᵀ Golovacheva and Karavaiko 1991
                         5 Sulfobacillus thermotolerans Bogdanova et al. 2006