Nitrospina Watson and Waterbury 1971 emend. Watson 1974 (Approved Lists 1980) Nitrospina Watson and Waterbury 1971 emend. Watson 1974 (Approved Lists 1980) Nitrospina gracilis Watson and Waterbury 1971 (Approved Lists 1980) Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Desulfobacterota Waite et al. 2020 Desulfobacteria Waite et al. 2020 Desulfobacterales Kuever et al. 2006 emend. Waite et al. 2020 Nitrospinaceae Garrity et al. 2006 Nitrospina Watson and Waterbury 1971 emend. Watson 1974 (Approved Lists 1980) Nitrospinaceae Garrity et al. 2006 Nitromaritima Ngugi et al. 2016 Nitrospina gracilis Watson and Waterbury 1971 (Approved Lists 1980) Watson S.W. Buchanan R.E. Gibbons N.E. Genus II. Nitrospina Watson and Waterbury 1971, 225 1974 8 452 452 Bergey's Manual of Determinative Bacteriology The Williams and Wilkins Co. Baltimore 0683011170 Watson S.W. Waterbury J.B. Characteristics of two marine nitrite oxidizing bacteria, Nitrospina gracilis nov. gen. nov. sp. and Nitrococcus mobilis nov. gen. nov. sp. 1971 77 203 230 Archiv für Mikrobiologie Arch Mikrobiol 0003-9276 10.1007/BF00408114 Watson S.W. Buchanan R.E. Gibbons N.E. Genus II. Nitrospina Watson and Waterbury 1971, 225 1974 8 452 452 Bergey's Manual of Determinative Bacteriology The Williams and Wilkins Co. Baltimore 0683011170 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 Watson S.W. Waterbury J.B. Characteristics of two marine nitrite oxidizing bacteria, Nitrospina gracilis nov. gen. nov. sp. and Nitrococcus mobilis nov. gen. nov. sp. 1971 77 203 230 Archiv für Mikrobiologie Arch Mikrobiol 0003-9276 10.1007/BF00408114