[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980)
       Class "Clostridia" Garrity et al. 2001 nom. ined. see Class Clostridia Rainey 2010
         Order Clostridiales Prévot 1953 (Approved Lists 1980)
           Family Peptococcaceae Rogosa 1971 (Approved Lists 1980)
             Genus Desulfotomaculum Campbell and Postgate 1965 (Approved Lists 1980)
               [Desulfotomaculum thermobenzoicum] Tasaki et al. 1991
                 Desulfotomaculum thermobenzoicum subsp. thermobenzoicumᵀ (Tasaki et al. 1991) Plugge et al. 2002