[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Proteobacteria" Garrity et al. 2005 stat. inval. see Phylum Pseudomonadota Garrity et al. 2021
       Class Deltaproteobacteria Kuever et al. 2006
         Order Myxococcales Tchan et al. 1948 (Approved Lists 1980)
           Suborder "Sorangineae" (sic) Reichenbach 2005 nom. inval. see Suborder Sorangiineae corrig. Reichenbach 2007
             Family Polyangiaceae Jahn 1924 (Approved Lists 1980)
               Genus "Haploangium" (ex Peterson 1959) Reichenbach 2005 nom. inval. see Genus Polyangium Link 1809 (Approved Lists 1980)
                 1 "Haploangium rugiseptum" Peterson 1959
                 2 "Haploangium minus"