Nitrospira Garrity and Holt 2001 non Nitrospira Watson et al. 1986 Nitrospirales Garrity and Holt 2001 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Nitrospirota corrig. Garrity and Holt 2021 Nitrospirae (sic) Garrity and Holt 2021 Nitrospira Garrity and Holt 2001 non Nitrospira Watson et al. 1986 Nitrospirota corrig. Garrity and Holt 2021 Nitrospirae (sic) Garrity and Holt 2021 Incertae sedis 352 Kostanjšek et al. 2013 Incertae sedis 423 Lefèvre et al. 2010 Incertae sedis 541 Zecchin et al. 2018 Thermodesulfovibrionia Umezawa et al. 2021 Nitrospirales Garrity and Holt 2001 Garrity G.M. Holt J.G. Garrity G.M. Boone D.R. Castenholz R.W. Taxonomic Outline of the Archaea and Bacteria. 2001 1 2 155 166 Bergey's Manual of Systematic Bacteriology Springer New York Garrity G.M. Holt J.G. Garrity G.M. Boone D.R. Castenholz R.W. Phylum BVIII. Nitrospirae phy. nov. 2001 1 2 451 Bergey's Manual of Systematic Bacteriology Springer New York