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
     Phylum Omnibacteria Margulis and Schwartz 1982 see Domain Bacteria Woese et al. 1990
       Class "Prosthecate Bacteria" see Order Caulobacterales Henrici and Johnson 1935 (Approved Lists 1980)
         Genus Caulobacter Henrici and Johnson 1935 (Approved Lists 1980)
           Caulobacter crescentua see Caulobacter crescentus Poindexter 1964 (Approved Lists 1980)