prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 stat. inval.
   Domain "Archaea" Woese et al. 1990 stat. inval. see Domain Archaea Woese et al. 2024
     Phylum "Crenarchaeota" Garrity and Holt 2002 stat. inval. [monotypic] see Phylum Thermoproteota Garrity and Holt 2021
       Class Thermoprotei Reysenbach 2002
         Order Cenarchaeales Cavalier-Smith 2002 nom. inval., nom. rej. [monotypic] see Order Nitrosopumilales Qin et al. 2017
           1 Family "Cenarchaeaceae" DeLong and Preston 1996 nom. pro-inval. [monotypic] see Family Nitrosopumilaceae Qin et al. 2017