prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   Domain "Archaea" Woese et al. 1990
     Phylum "Thaumarchaeota" Brochier-Armanet et al. 2008 [monotypic]
       Class Nitrososphaeria Stieglmeier et al. 2014 [monotypic]
         Order Nitrososphaerales Stieglmeier et al. 2014 [monotypic]
           Family Nitrososphaeraceae Stieglmeier et al. 2014 [monotypic]
             Genus Nitrososphaera Stieglmeier et al. 2014