Aquaspirillum itersonii itersonii (Giesberger 1936) Hylemon et al. 1973 (Approved Lists 1980) 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 Neisseriales Tønjum 2006 emend. Chen et al. 2021 Aquaspirillaceae Chen et al. 2022 Aquaspirillum Hylemon et al. 1973 emend. Kreig 1974 (Approved Lists 1980) Aquaspirillum itersonii (Giesberger 1936) Hylemon et al. 1973 (Approved Lists 1980) Aquaspirillum itersonii itersonii (Giesberger 1936) Hylemon et al. 1973 (Approved Lists 1980) Aquaspirillum itersonii (Giesberger 1936) Hylemon et al. 1973 (Approved Lists 1980) Aquaspirillum itersonii nipponicum (Terasaki 1973) Terasaki 1979 (Approved Lists 1980) Novispirillum itersonii (Giesberger 1936) Yoon et al. 2007 Novispirillum itersonii itersonii (Giesberger 1936) Yoon et al. 2007 Aquaspirillum itersonii itersonii (Giesberger 1936) Hylemon et al. 1973 (Approved Lists 1980) Aquaspirillum itersonii (Giesberger 1936) Hylemon et al. 1973 (Approved Lists 1980) Levispirillum itersonii (Giesberger 1936) Pot and Gillis 2005 Levispirillum itersonii itersonii (Giesberger 1936) Pot and Gillis 2005 Yoon J.H. Kang S.J. Park S. Lee S.Y. Oh T.K. Reclassification of Aquaspirillum itersonii and Aquaspirillum peregrinum as Novispirillum itersonii gen. nov., comb. nov. and Insolitispirillum peregrinum gen. nov., comb. nov. 2007 57 12 2830 2835 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.65340-0 18048733 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 Pot B. Gillis M. Garrity G.M. Brenner D.J. Krieg N.R. Staley J.T. Genus III. Levispirillum gen. nov. 2005 2, Part C 2 27 Bergey's Manual of Systematic Bacteriology Springer New York 0387241450 Hylemon P.B. Wells J.S. Krieg N.R. Jannasch H.W. The genus Spirillum: a taxonomic study. 1973 23 4 340 380 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-23-4-340