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]
               Phylum Euryarchaeota Garrity and Holt 2001
                 Class "Methanomicrobia"
                   Order Methanosarcinales Boone et al. 2002
                     Family Methanosarcinaceaeᵀ Balch and Wolfe 1981
                       Genus Methanosarcinaᵀ Kluyver and van Niel 1936 (Approved Lists 1980)
                         Methanosarcina acetivorans Sowers et al. 1986