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 Pseudomonadati (Gibbons and Murray 1978) Oren and Göker 2024
               Phylum Aquificota Reysenbach 2021 [monotypic]
                 Class Aquificiaᵀ corrig. Reysenbach 2002
                   Order Desulfurobacteriales Gupta and Lali 2014 [monotypic]
                     Family Desulfurobacteriaceaeᵀ L'Haridon et al. 2006
                       Genus Desulfurobacteriumᵀ L'Haridon et al. 1998
                         1 Desulfurobacterium atlanticum L'Haridon et al. 2006
                         2 Desulfurobacterium pacificum L'Haridon et al. 2006
                         3 Desulfurobacterium thermolithotrophumᵀ L'Haridon et al. 1998