[living organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokaryota Margulis 1974 nom. nud.
     Kingdom Archaea Woese et al. 1990 see Domain Archaea Woese et al. 1990 stat. inval.
       Phylum Crenarchaeota Garrity and Holt 2002 stat. inval. see Phylum Thermoproteota Garrity and Holt 2021
         Class Thermoprotei Reysenbach 2002
           Order Thermoproteales Zillig and Stetter 1982