Domain Bacteria Woese et al. 1990
Count: [*] *
   Phylum Proteobacteria Garrity and Holt 2001 see Phylum Proteobacteria Garrity et al. 2005
  Count: [*] *
     Class "Betaproteobacteria" Garrity et al. 2001 nom. ined. see Class Betaproteobacteria Garrity et al. 2006
    Count: [*] *
       Order "Burkholderiales" see Order Burkholderiales Garrity et al. 2006
      Count: [*] *
         Family Comamonadaceae Willems et al. 1991
        Count: -
           Genus Polaromonas Irgens et al. 1996
          Count: -