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
                       1 Genus Methanosarcinaᵀ Kluyver and van Niel 1936 (Approved Lists 1980)
                       2 Genus Methanococcoides Sowers and Ferry 1985
                       3 Genus Methanohalobium Zhilina and Zavarzin 1988 [monotypic]
                       4 Genus Methanohalophilus Paterek and Smith 1988
                       5 Genus Methanolobus König and Stetter 1983
                       6 Genus Methanomethylovorans Lomans et al. 2004
                       7 Genus Methanimicrococcus corrig. Sprenger et al. 2000 [monotypic]
                       8 Genus Methanosalsum Boone and Baker 2002 [monotypic]