Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Archaea Woese et al. 1990 [paraphyletic]
               Superphylum DPANN Rinke et al. 2013
                 Candidate phylum Aenigmarchaeota (DSEG) Rinke et al. 2013
                   Candidatus Aenigmarchaeumᵀ Rinke et al. 2013
                     Candidatus Aenigmarchaeum subterraneumᵀ Rinke et al. 2013