Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [[crown] organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           [Superkingdom Prokaryonta] see Superkingdom Prokarya
             [Suprakingdom Archaebacteria] see Domain Archaea Woese et al. 1990
               [Kingdom Archaebacteriobionta] see Domain Archaea Woese et al. 1990
                 [Infrakingdom Methanobacteriobionta]
                   1 [Phylum Methanococcacea]
                   2 [Phylum Methanospirillacea]
                   3 [Phylum Methanosarcinacea]
                   4 [Phylum Methanobacteriacea]