living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokaryotae see Superkingdom Prokarya
     Kingdom Monera Haeckel 1866 see Domain Bacteria Woese et al. 1990 stat. inval.
       Division Bacteria Murray 1974 nom. vernac. see Domain Bacteria Woese et al. 1990 stat. inval.
         "Gram-negative, chemolithotrophic bacteria"
           Family Nitrobacteraceae corrig. Buchanan 1917 (Approved Lists 1980)
             1 Genus Nitrobacter Winogradsky 1892 (Approved Lists 1980) nom. cons.
             2 Genus Nitrospina Watson and Waterbury 1971 (Approved Lists 1980)
             3 Genus Nitrococcus Watson and Waterbury 1971 (Approved Lists 1980)
             4 Genus Nitrosomonas Winogradsky 1892 (Approved Lists 1980) nom. cons.
             5 Genus Nitrosospira Winogradsky and Winogradsky 1933 (Approved Lists 1980)
             6 Genus Nitrosococcus Winogradsky 1892 nom. cons. (Approved Lists 1980)
             7 Genus Nitrosolobus Watson et al. 1971 (Approved Lists 1980) see Genus Nitrosospira Winogradsky and Winogradsky 1933 (Approved Lists 1980)
             8 Genus Nitrosovibrio Harms et al. 1976 nom. inval.