Nitrosolobus Watson et al. 1971 emend. Watson 1974 (Approved Lists 1980) Nitrosolobus multiformis Watson et al. 1971 (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 Nitrosomonadales Garrity et al. 2006 emend. Boden et al. 2017 Nitrosomonadaceae Garrity et al. 2006 Nitrosolobus Watson et al. 1971 emend. Watson 1974 (Approved Lists 1980) Nitrosomonadaceae Garrity et al. 2006 Nitrosospira Winogradsky and Winogradsky 1933 (Approved Lists 1980) emend. Head et al. 1993 Nitrosomonas Winogradsky 1892 (Approved Lists 1980) emend. Campbell et al. 2011 Nitrosolobus multiformis Watson et al. 1971 (Approved Lists 1980) Watson S.W. Graham L.B. Remsen C.C. Valois F.W. A lobular, ammonia-oxidizing bacterium, Nitrosolobus multiformis nov. gen. nov. sp. 1971 76 183 203 Archiv für Mikrobiologie Arch Mikrobiol 0003-9276 10.1007/BF00409115 5552132 Garrity G.M. Bell J.A. Lilburn T. Garrity G.M. Brenner D.J. Krieg N.R. Staley J.T. Family I. Nitrosomonadaceae fam. nov. 2005 2, Part C 2 864 Bergey's Manual of Systematic Bacteriology Springer New York 0387241450