prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   Domain "Bacteria" Woese et al. 1990
     Phylum "Proteobacteria" Garrity et al. 2005 see Superphylum Proteobacteria Craig et al. 2010
       Class Deltaproteobacteria Kuever et al. 2006
         Order Syntrophobacterales Kuever et al. 2006
           Family Syntrophobacteraceae Kuever et al. 2006
             1 Genus Desulfacinum Rees et al. 1995
             2 Genus Desulfoglaeba Davidova et al. 2006
             3 Genus Desulforhabdus Oude Elferink et al. 1997
             4 Genus Desulfosoma Baena et al. 2011
             5 Genus Desulfovirga Tanaka et al. 2000
             6 Genus Syntrophobacter Boone and Bryant 1984
             7 Genus Thermodesulforhabdus Beeder et al. 1996