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 Myxococcales Tchan et al. 1948 (Approved Lists 1980)
                   Suborder Cystobacterineae Reichenbach 2007
                     Family Cystobacteraceaeᵀ McCurdy 1970 (Approved Lists 1980)
                       Genus Cystobacterᵀ Schroeter 1886 (Approved Lists 1980)
                         Cystobacter ferrugineus (Krzemieniewska and Krzemieniewski 1927) McCurdy 1970 (Approved Lists 1980)