Proteobacteria

Orders
Class Alpha Proteobacteria Caulobacterales - e.g. Caulobacter Parvularculales Rhizobiales - e.g. rhizobia Rhodobacterales Rhodospirillales - e.g. Acetobacter Rickettsiales - e.g. Rickettsia Sphingomonadales - e.g. Sphingomonas Class Beta Proteobacteria Burkholderiales - e.g. Bordetella Hydrogenophilales Methylophilales Neisseriales - e.g. Neisseria Nitrosomonadales Rhodocyclales Procabacteriales Class Gamma Proteobacteria Acidithiobacillales Aeromonadales - e.g. Aeromonas Alteromonadales - e.g. Pseudoalteromonas Cardiobacteriales Chromatiales - purple sulfur bacteria Enterobacteriales - e.g. Escherichia Legionellales - e.g. Legionella Methylococcales Oceanospirillales Pasteurellales - e.g. Haemophilus Pseudomonadales - e.g. Pseudomonas Thiotrichales - e.g. Thiomargarita Vibrionales - e.g. Vibrio Xanthomonadales - e.g. Stenotrophomonas Class Delta Proteobacteria Bdellovibrionales - e.g. Bdellovibrio Desulfobacterales Desulfovibrionales Desulfurellales Desulfuromonadales - e.g. Geobacter Myxococcales - myxobacteria Syntrophobacterales Class Epsilon Proteobacteria Campylobacterales - e.g. Helicobacter Nautiliales