[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
     Division Bacteria (Haeckel 1894) see Domain Bacteria Woese et al. 1990
       Knopvormende en bacteriën met aanhangsels see Class Alphaproteobacteria Garrity and Holt 2001 nom. nud.
         1 Genus Hyphomicrobium Stutzer and Hartleb 1898 (Approved Lists 1980)
         2.1 Genus Gaulobacter
         2.2 Genus Gallionella Ehrenberg 1838 (Approved Lists 1980)