Nitrosococcus halophilus Koops et al. 1990 emend. Campbell et al. 2011 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 Chromatiales Imhoff 2005 Chromatiaceae Bavendamm 1924 (Approved Lists 1980) emend. Sisinthy et al. 2017 Nitrosococcus Winogradsky 1892 (Approved Lists 1980) emend. Wang et al. 2016 Nitrosococcus halophilus Koops et al. 1990 emend. Campbell et al. 2011 Nitrosococcus Winogradsky 1892 (Approved Lists 1980) emend. Wang et al. 2016 Nitrosococcus nitrosus (Migula 1900) Buchanan 1925 (Approved Lists 1980) Nitrosococcus oceanus (sic) (Watson 1965) Watson 1971 (Approved Lists 1980) Nitrosococcus oceani corrig. (Watson 1965) Watson 1971 (Approved Lists 1980) Nitrosococcus sp. None 2015 Nitrosococcus watsonii Campbell et al. 2011 Nitrosococcus wardiae Wang et al. 2016 Nitrosococcus halophilus Koops et al. 1990 emend. Campbell et al. 2011 Koops H.-P. Böttcher B. Möller U.C. Pommerening-Röser A. Stehr G. Description of a new species of Nitrosococcus 1990 154 3 244 248 Archives of Microbiology Arch Microbiol 0302-8933 1432-072X 10.1007/BF00248962 Koops H.-P. Böttcher B. Möller U.C. Pommerening-Röser A. Stehr G. Description of a new species of Nitrosococcus 1990 154 3 244 248 Archives of Microbiology Arch Microbiol 0302-8933 1432-072X 10.1007/BF00248962