organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Monera Haeckel 1866 see Domain Bacteria Woese et al. 1990 stat. inval.
     Phylum Myxobacteria see Order Myxococcales Tchan et al. 1948 (Approved Lists 1980)
       Class Cytophagales "Leadbetter 1974" see Order Sphingobacteriales "Garrity and Holt 2001" nom. nud.
         Family Beggiatoaceae Migula 1894 (Approved Lists 1980)
           Genus Beggiatoa Trevisan 1842 nom. cons. (Approved Lists 1980)