[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum "Proteobacteria" Garrity et al. 2005 see Superphylum Proteobacteria Craig et al. 2010
       Class Betaproteobacteria Garrity et al. 2006
         1 Order Burkholderiales Garrity et al. 2006
         2 Order Hydrogenophilales Garrity et al. 2006
         3 Order Methylophilales Garrity et al. 2006
         4 Order Neisseriales Tønjum 2006
         5 Order Nitrosomonadales Garrity et al. 2006
         6 Order Rhodocyclales Garrity et al. 2006
         7 Order "Procabacteriales" Garrity et al., 2003