Kingdom Bacteria Cavalier-Smith 2002 stat. inval. [paraphyletic?] - bacteria see Domain Bacteria Woese et al. 1990 stat. inval.
   Subkingdom Negibacteria Cavalier-Smith 2002 stat. inval. [paraphyletic?] - negibacteria see Domain Bacteria Woese et al. 1990 stat. inval.
     Infrakingdom Glycobacteria Cavalier-Smith 2002 stat. inval. see Domain Bacteria Woese et al. 1990 stat. inval.
       Superdivision Exoflagellata Cavalier-Smith 2002
         Division Proteobacteria Cavalier-Smith 2002 stat. inval.
           Subdivision Geobacteria Cavalier-Smith 2002
             Class Ferrobacteria Cavalier-Smith 2002 nom. rej. [monotypic]
               Order Geovibrialesᵀ Cavalier-Smith 2002 nom. rej.
                 Genus Geovibrioᵀ Caccavo et al. 2000