[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   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 Desulfobacterales Kuever et al. 2006
           Family Desulfobulbaceae Kuever et al. 2006
             Genus Desulfobulbus Widdel 1981
               1 Desulfobulbus propionicus Widdel 1981
               2 Desulfobulbus elongatus Samain et al. 1985
               3 Desulfobulbus mediterraneus Sass et al. 2002
               4 Desulfobulbus rhabdoformis Lien et al. 1998