thermodesulfobium thermodesulfobium thermodesulfobium is a gram-negative, strictly anaerobic, moderately thermophilic, non-spore-forming and non-motile genus of bacteria from the family of thermodesulfobiaceae. thermodesulfobium scientific classification domain: bacteria phylum: "thermodesulfobiota" class: "thermodesulfobiia" order: "thermodesulfobiales" family: thermodesulfobiaceae genus: thermodesulfobiummori et al. 2004 type species thermodesulfobium narugensemori et al. 2004 species t. acidiphilum frolov et al. 2017 t. narugense morie et al. 2004