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) Nitrospina gracilis Watson and Waterbury 1971 (Approved Lists 1980) Nitrospina Watson and Waterbury 1971 emend. Watson 1974 (Approved Lists 1980) Nitrospina gracilis Watson and Waterbury 1971 (Approved Lists 1980) Teske A. Alm E. Regan J.M. Toze S. Rittmann B.E. Stahl D.A. Evolutionary relationships among ammonia- and nitrite-oxidizing bacteria 1994 176 6623 6630 Journal of Bacteriology J Bacteriol 0021-9193 1098-5530 7961414 Nitrospina gracilis Watson and Waterbury 1971 (Approved Lists 1980) Teske A. Alm E. Regan J.M. Toze S. Rittmann B.E. Stahl D.A. Evolutionary relationships among ammonia- and nitrite-oxidizing bacteria 1994 176 6623 6630 Journal of Bacteriology J Bacteriol 0021-9193 1098-5530 7961414 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 Nitrospina gracilis Watson and Waterbury 1971 (Approved Lists 1980) Nitrospina gracilis Watson and Waterbury 1971 (Approved Lists 1980) 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