procaryotes
   Domain Bacteria Woese et al. 1990
     Phylum Thermodesulfobacteria Garrity and Holt 2001 see Phylum Deltaproteobacteria Kuever et al., 2006
       Class Thermodesulfobacteria Hatchikian et al. 2001 see Class Thermodesulfobacteria Hatchikian et al. 2002
         Order Thermodesulfobacteriales Hatchikian et al. 2001 see Order Thermodesulfobacteriales Hatchikian et al. 2002
           Family Thermodesulfobacteriaceae Hatchikian et al. 2001 see Family Thermodesulfobacteriaceae Hatchikian et al. 2002
             1 Genus Thermodesulfobacterium Zeikus et al. 1995