life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokarya see Domain Bacteria Woese et al. 1990 stat. inval.
     Kingdom Bacteria Cavalier-Smith 1998 nom. inval. - bacteria see Kingdom Bacteria Cavalier-Smith 2002 stat. inval.
       Subkingdom Eubacteria Cavalier-Smith 1981 see Domain Bacteria Woese et al. 1990 stat. inval.
         Division Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980) nom. rej. - gram-positive bacteria see Phylum Firmicutes (Gibbons and Murray 1978) Garrity and Holt 2001 stat. inval.
           Phylum Thermotogae Margulis and Schwartz 1998 nom. ined. - thermophilic fermenters see Phylum Thermotogae Reysenbach 2002 stat. inval.
             Genus Thermotoga Stetter and Huber 1986
               1 Thermotoga subterranea Jeanthon et al. 1995 see Thermotoga subterranea Jeanthon et al. 2000
               2 Thermotoga maritima Stetter and Huber 1986
               3 Thermotoga neapolitana Jannasch et al. 1989
               4 Thermotoga thermarum Windberger et al. 1992