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
                 01 Genus Deferrisoma Slobodkina et al. 2012, incertae sedis [monotypic]
                 02 Genus Dissulfuribacter Slobodkin et al. 2013, incertae sedis [monotypic]
                 03 Family Syntrophorhabdaceae Qiu et al. 2008, incertae sedis [monotypic]
                 04 Order Desulfurellales Kuever et al. 2006 [monotypic]
                 05 Order Desulfovibrionales Kuever et al. 2006
                 06 Order Desulfobacterales Kuever et al. 2006
                 07 Order Desulfarculales corrig. Kuever et al. 2006 [monotypic]
                 08 Order Desulfuromonadales corrig. Kuever et al. 2006
                 09 Order Syntrophobacterales Kuever et al. 2006
                 10 Order Bdellovibrionales Garrity et al. 2006
                 11 Order Myxococcales Tchan et al. 1948 (Approved Lists 1980)