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?]
             Phylum "Deltaproteobacteria" Kuever et al., 2006 [polyphyletic]
               Class Deltaproteobacteriaᵀ Kuever et al. 2006
                 Order Syntrophobacterales Kuever et al. 2006
                   Family Syntrophobacteraceaeᵀ Kuever et al. 2006
                     1 Genus Syntrophobacterᵀ Boone and Bryant 1984
                     2 Genus Desulfacinum Rees et al. 1995
                     3 Genus Desulfoglaeba Davidova et al. 2006 [monotypic]
                     4 Genus Desulforhabdus Oude Elferink et al. 1997 [monotypic]
                     5 Genus Desulfosoma Baena et al. 2011
                     6 Genus Desulfovirga Tanaka et al. 2000 [monotypic]
                     7 Genus Thermodesulforhabdus Beeder et al. 1996 [monotypic]