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 Genus Thermodesulfobacterium Zeikus et al. 1995