Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Superphylum Terrabacteria Battistuzzi et al. 2004
               Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980)
                 Class Clostridia Rainey 2010
                   Order Thermoanaerobacterales Wiegel 2010
                     Family Thermoanaerobacteraceaeᵀ Wiegel 2010
                       Genus Thermoanaerobacter Wiegel and Ljungdahl 1982
                         01 Thermoanaerobacter acetoethylicus (Ben-Bassat and Zeikus 1983) Rainey and Stackebrandt 1993
                         02 Thermoanaerobacter brockii (Zeikus et al. 1983) Lee et al. 1993
                         03 Thermoanaerobacter ethanolicusᵀ Wiegel and Ljungdahl 1982
                         04 Thermoanaerobacter italicus Kozianowski et al. 1998
                         05 Thermoanaerobacter kivui (Leigh and Wolfe 1983) Collins et al. 1994
                         06 Thermoanaerobacter mathranii Larsen et al. 1998
                         07 Thermoanaerobacter pseudethanolicus Onyenwoke et al. 2007
                         08 Thermoanaerobacter siderophilus Slobodkin et al. 1999
                         09 Thermoanaerobacter sulfurigignens Lee et al. 2007
                         10 Thermoanaerobacter sulfurophilus Bonch-Osmolovskaya 1998
                         11 Thermoanaerobacter thermocopriae (Jin et al. 1988) Collins et al. 1994
                         12 Thermoanaerobacter thermohydrosulfuricus (Klaushofer and Parkkinen 1965) Lee et al. 1993
                         13 Thermoanaerobacter uzonensis Wagner et al. 2008
                         14 Thermoanaerobacter wiegelii Cook et al. 1996