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 Desulfobacterales Kuever et al. 2006
                   Family Desulfobulbaceae Kuever et al. 2006
                     Genus Desulfobulbusᵀ Widdel 1981
                       1 Desulfobulbus alkaliphilus Sorokin et al. 2012
                       2 Desulfobulbus elongatus Samain et al. 1985
                       3 Desulfobulbus japonicus Suzuki et al. 2007
                       4 Desulfobulbus marinus Kuever et al. 2013
                       5 Desulfobulbus mediterraneus Sass et al. 2002
                       6 Desulfobulbus propionicusᵀ Widdel 1981
                       7 Desulfobulbus rhabdoformis Lien et al. 1998