Nitrosospira multiformis (Watson et al. 1971) Head et al. 1995 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 Nitrosospira Winogradsky and Winogradsky 1933 (Approved Lists 1980) emend. Head et al. 1993 Nitrosospira multiformis (Watson et al. 1971) Head et al. 1995 Nitrosospira Winogradsky and Winogradsky 1933 (Approved Lists 1980) emend. Head et al. 1993 Nitrosospira lacus Urakawa et al. 2015 Nitrosospira tenuis (ex Harms et al. 1976) Head et al. 1995 Nitrosospira briensis Winogradsky and Winogradsky 1933 (Approved Lists 1980) Nitrosolobus multiformis Watson et al. 1971 (Approved Lists 1980) Nitrosospira multiformis (Watson et al. 1971) Head et al. 1995 List Editor Validation List no. 54. Validation of the publication of new names and new combinations previously effectively published outside the IJSB. 1995 45 3 619 620 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-45-3-619 Liolios K. Chen I.M. Mavromatis K. Tavernarakis N. Hugenholtz P. Markowitz V.M. Kyrpides N.C. The Genomes On Line Database (GOLD) in 2009: status of genomic and metagenomic projects and their associated metadata 2010 38 D346 354 Nucleic Acids Research Nucleic Acids Res. 0305-1048 1362-4962 10.1093/nar/gkp848 19914934 Head I.M. Hiorns W.D. Embley T.M. McCarthy A.J. Saunders J.R. The phylogeny of autotrophic ammonia-oxidizing bacteria as determined by analysis of 16S ribosomal RNA gene sequences 1993 139 6 1147 1153 Journal of General Microbiology J Gen Microbiol 0022-1287 10.1099/00221287-139-6-1147 7689633