[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 Myxococcales Tchan et al. 1948 (Approved Lists 1980)
           Suborder "Sorangineae" see Suborder Sorangiineae corrig. Reichenbach 2007
             Family Polyangiaceae Jahn 1924 (Approved Lists 1980)
               Genus "Haploangium"
                 1 "Haploangium rugiseptum" Peterson 1959
                 2 "Haploangium minus"