[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Thermodesulfobacteria" Garrity and Holt 2002 stat. inval. see Phylum Thermodesulfobacteriota Garrity and Holt 2021
       Class Thermodesulfobacteria Hatchikian et al. 2002
         Order Thermodesulfobacteriales Hatchikian et al. 2002
           Family Thermodesulfobacteriaceae Hatchikian et al. 2002
             1 Genus Thermodesulfobacterium Zeikus et al. 1995
             2 Genus Thermodesulfatator Moussard et al. 2004