life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Archaea Woese et al. 1990 stat. inval. see Domain Archaea Woese et al. 2024
     1 Phylum Candidatus Micrarchaeota Baker and Dick 2013 see Phylum Micrarchaeota Baker and Dick 2023
     2.1 Phylum Candidatus Diapherotrites Rinke et al. 2013
     2.2.1 [Superphylum] DPANN Rinke et al. 2013 see Kingdom Nanobdellati Rinke et al. 2024
     2.2.2.1 Order Candidatus Altiarchaeales (sic) Probst et al. 2014 nom. pro-inval. see Order Altarchaeales corrig. Probst et al. 2020
     2.2.2.2.1 Phylum Candidatus Z7ME43
     2.2.2.2.2.1.1.1 Class Methanopyri Garrity and Holt 2002
     2.2.2.2.2.1.1.2 Class Methanococci Boone 2002
     2.2.2.2.2.1.1.3 Class Hadesarchaea (SAGMEG) Baker et al. 2016 nom. pro-inval.
     2.2.2.2.2.1.1.4 Class Thermococci Zillig and Reysenbach 2002
     2.2.2.2.2.1.1.5 Class Methanobacteria Boone 2002
     2.2.2.2.2.1.2.1 Class Thermoplasmata Reysenbach 2002
     2.2.2.2.2.1.2.2.1 Class Archaeoglobi Garrity and Holt 2002
     2.2.2.2.2.1.2.2.2.1 Class Methanomicrobia Garrity et al. 2005 nom. inval.
     2.2.2.2.2.1.2.2.2.2 Class Halobacteria Grant et al. 2002
     2.2.2.2.2.2 Superphylum TACK Guy and Ettema 2011 see Kingdom Thermoproteati Guy and Ettema 2024