Nitrosomonadales Garrity et al. 2006 emend. Boden et al. 2017 Nitrosomonadales Garrity et al. 2006 emend. Boden et al. 2017 Nitrosomonas Winogradsky 1892 (Approved Lists 1980) emend. Campbell et al. 2011 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Proteobacteria (sic) Garrity et al. 2021 Pseudomonadota corrig. Garrity et al. 2021 Alphaproteobacteriota (sic) Garrity et al. 2021 Betaproteobacteria Garrity et al. 2006 emend. Boden et al. 2017 Nitrosomonadales Garrity et al. 2006 emend. Boden et al. 2017 Betaproteobacteria Garrity et al. 2006 emend. Boden et al. 2017 Procabacteriales (sic) Garrity et al. 2003 Procaibacteriales corrig. Garrity et al. 2003 Methylophilales Garrity et al. 2006 Incertae sedis 138 None 2015 Burkholderiales Garrity et al. 2006 Neisseriales Tønjum 2006 emend. Chen et al. 2021 Hydrogenophilales Garrity et al. 2006 emend. Boden et al. 2017 Sulfuricellales Watanabe et al. 2015 Incertae sedis 94 None 2015 Rhodocyclales Garrity et al. 2006 Incertae sedis 364 McCutcheon and Moran 2010 Incertae sedis 231 Toenshoff et al. 2012 Incertae sedis 238 Thao et al. 2002 Incertae sedis 366 Toenshoff et al. 2012 Incertae sedis 291 Du et al. 1994 Incertae sedis 322 Alawi et al. 2007 Incertae sedis 350 Gonella et al. 2011 Incertae sedis 442 Nakabachi et al. 2013 Incertae sedis 495 Ramírez-Puebla et al. 2010 Incertae sedis 574 Song et al. 2020 Nitrosomonadaceae Garrity et al. 2006 Spirillaceae Migula 1894 (Approved Lists 1980) Gallionellaceae Henrici and Johnson 1935 (Approved Lists 1980) emend. Kojima et al. 2021 Methylophilaceae Garrity et al. 2006 Thiobacillaceae Boden et al. 2017 Sterolibacteriaceae Boden et al. 2017 Usitatibacteraceae Vieira et al. 2021 Boden R. Hutt L.P. Rae A.W. Reclassification of Thiobacillus aquaesulis (Wood & Kelly, 1995) as Annwoodia aquaesulis gen. nov., comb. nov., transfer of Thiobacillus (Beijerinck, 1904) from the Hydrogenophilales to the Nitrosomonadales, proposal of Hydrogenophilalia class. nov. within the ‘Proteobacteria’, and four new families within the orders Nitrosomonadales and Rhodocyclales 2017 67 5 1191 1205 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.001927 28581923 Vieira S. Huber K.J. Neumann-Schaal M. Geppert A. Luckner M. Wanner G. Overmann J. Usitatibacter rugosus gen. nov., sp. nov. and Usitatibacter palustris sp. nov., novel members of Usitatibacteraceae fam. nov. within the order Nitrosomonadales isolated from soil. 2021 71 2 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.004631 33433313 Garrity G.M. Holt J.G. Garrity G.M. Boone D.R. Castenholz R.W. The Road Map to the Manual 2001 1 2 119 169 Bergey's Manual of Systematic Bacteriology Springer New York Euzéby J. Validation List No. 107. List of new names and new combinations previously effectively, but not validly, published 2006 56 1 1 6 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.64188-0 16403855 Boden R. Hutt L.P. Rae A.W. Reclassification of Thiobacillus aquaesulis (Wood & Kelly, 1995) as Annwoodia aquaesulis gen. nov., comb. nov., transfer of Thiobacillus (Beijerinck, 1904) from the Hydrogenophilales to the Nitrosomonadales, proposal of Hydrogenophilalia class. nov. within the ‘Proteobacteria’, and four new families within the orders Nitrosomonadales and Rhodocyclales 2017 67 5 1191 1205 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.001927 28581923 Garrity G.M. Bell J.A. Lilburn T. Garrity G.M. Brenner D.J. Krieg N.R. Staley J.T. Order V. Nitrosomonadales ord. nov. 2005 2, Part C 2 863 Bergey's Manual of Systematic Bacteriology Springer New York 0387241450 ToDo: Garrity In Boden et al. 2017 (rid.18621) the authors suggest merging the family Methylophilaceae into the Nitrosomondales, leaving the order Methylophilales defunct.