Nitrobacter sp. None 2015 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 Alphaproteobacteria Garrity et al. 2006 Hyphomicrobiales Douglas 1957 (Approved Lists 1980) emend. Hördt et al. 2020 Nitrobacteraceae Buchanan 1917 (Approved Lists 1980) emend. Hördt et al. 2020 Nitrobacter Winogradsky 1892 emend. Watson 1974 (Approved Lists 1980) Nitrobacter sp. None 2015 Nitrobacter Winogradsky 1892 emend. Watson 1974 (Approved Lists 1980) Nitrobacter vulgaris Bock et al. 2001 Nitrobacter winogradskyi Winslow et al. 1917 (Approved Lists 1980) emend. Hördt et al. 2020 Nitrobacter hamburgensis Bock et al. 2001 Nitrobacter alkalicus Sorokin et al. 1999 Nitrobacter sp. None 2015 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 No reference is available 2015