Pseudomonadineae Breed et al. 1957 (Approved Lists 1980) Pseudomonadineae Breed et al. 1957 (Approved Lists 1980) Pseudomonas Migula 1894 (Approved Lists 1980) emend. Yang et al. 2013 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 Gammaproteobacteria Garrity et al. 2005 emend. Williams and Kelly 2013 Pseudomonadales Orla-Jensen 1921 (Approved Lists 1980) emend. Liao et al. 2020 Pseudomonadineae Breed et al. 1957 (Approved Lists 1980) Pseudomonadales Orla-Jensen 1921 (Approved Lists 1980) emend. Liao et al. 2020 Moraxellaceae Rossau et al. 1991 Ventosimonadaceae Lin et al. 2016 Pseudomonadaceae Winslow et al. 1917 (Approved Lists 1980) Branhamaceae Catlin 1991 Nitrobacteraceae Buchanan 1917 (Approved Lists 1980) emend. Hördt et al. 2020 Incertae sedis 6 Garrity et al. 2007 Litoricolaceae Kim et al. 2007 Natronospirillaceae Kevbrin et al. 2020 Marinobacteraceae Liao et al. 2021 Zooshikellaceae Liao et al. 2020 emend. Huang et al. 2021 Nitrobacteraceae Buchanan 1917 (Approved Lists 1980) emend. Hördt et al. 2020 Pseudomonadaceae Winslow et al. 1917 (Approved Lists 1980) Caulobacteraceae Henrici and Johnson 1935 (Approved Lists 1980) Spirillaceae Migula 1894 (Approved Lists 1980) Azotobacteraceae Pribram 1933 (Approved Lists 1980) Breed R.S. Murray E.G.D. Smith N.R. Breed R.S. Murray E.G.D. Smith N.R. Order I. Pseudomonadales Orla-Jensen, 1921 1957 7 35 261 Bergey's Manual of Determinative Bacteriology The Williams and Wilkins Co. Baltimore Breed R.S. Murray E.G.D. Smith N.R. Breed R.S. Murray E.G.D. Smith N.R. Suborder II. Pseudomonadineae Breed, Murray and Smith, Sub-Ordo Nov. 1957 7 67 261 Bergey's Manual of Determinative Bacteriology The Williams and Wilkins Co. Baltimore Young J.M. Park D.C. Probable synonymy of the nitrogen-fixing genus Azotobacter and the genus Pseudomonas. 2007 57 12 2894 2901 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.64969-0 18048745 Breed R.S. Murray E.G.D. Smith N.R. Breed R.S. Murray E.G.D. Smith N.R. Suborder II. Pseudomonadineae Breed, Murray and Smith, Sub-Ordo Nov. 1957 7 67 261 Bergey's Manual of Determinative Bacteriology The Williams and Wilkins Co. Baltimore Skerman V.B.D. McGowan V. Sneath P.H.A. Approved Lists of Bacterial Names 1980 30 1 225 420 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-30-1-225 This taxon is not currently in use.