Family Thermodesulfobacteriaceae Hatchikian et al. 2002
   1.1 Genus Thermodesulfobacterium Zeikus et al. 1995
   1.2 Genus "Geothermobacterium" Kashefi et al. 2002 nom. inval.
   2 Genus Thermodesulfatator Moussard et al. 2004