[living organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokaryota
     Kingdom Archaea Woese et al. 1990 see Domain Archaea Woese et al. 1990
       Phylum Crenarchaeota Garrity and Holt 2001
         Class Thermoprotei Reysenbach 2002
           Order Thermoproteales Zillig and Stetter 1982