procaryotes
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum Aquificae Reysenbach 2001 nom. inval. [monotypic] see Phylum Aquificae Reysenbach 2002 stat. inval.
       Class Aquificae Reysenbach 2001 nom. inval. [monotypic] see Class Aquificae Reysenbach 2002
         Order Aquificalesᵀ Reysenbach 2001 nom. inval. see Order Aquificales Reysenbach 2002
           Genus Desulfurobacterium L'Haridon et al. 1998, incertae sedis