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 Myxococcales Tchan et al. 1948 (Approved Lists 1980)
           Suborder Sorangiineae corrig. Reichenbach 2007
             Family Polyangiaceae Jahn 1924 (Approved Lists 1980)
               Genus Polyangium Link 1809 (Approved Lists 1980)