Procaryotic Genera
Count: [*] 25p;39c;84o;215f;1008g [28 May 2016]
   Domain "Bacteria" Woese et al. 1990
  Count: [*] 23p;31c;72o;194f;935g [28 May 2016]
     Phylum Proteobacteria Garrity and Holt 2001 see Phylum Proteobacteria Garrity et al. 2005
    Count: [*] 5c;34o;72f;430g [27 May 2016]
       Class "Betaproteobacteria" Garrity et al. 2001 nom. ined. see Class Betaproteobacteria Garrity et al. 2006
      Count: [*] 6o;12f;67g [27 May 2016]
         Order "Nitrosomonadales" see Order Nitrosomonadales Garrity et al. 2006
        Count: [*] 3f;4g [27 May 2016]
           Family Gallionellaceae Henrici and Johnson 1935 (Approved Lists 1980) [monotypic]
          Count: [*] 1g [27 May 2016]
             1 Genus Gallionella Ehrenberg 1838 (Approved Lists 1980)
            Count: -