[organisms] 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
     Phylum "Euryarchaeota" Garrity and Holt 2002 stat. inval. see Kingdom Methanobacteriati (Garrity and Holt 2023) Oren and Göker 2024
       Class "Methanomicrobia" Garrity et al. 2005 nom. inval.
         Order Methanosarcinales Boone et al. 2002
           Family Methanosarcinaceae Balch and Wolfe 1981
             Genus Methanosarcina Kluyver and van Niel 1936 (Approved Lists 1980)
               01 Methanosarcina barkeri Schnellen 1947 (Approved Lists 1980)
               02 Methanosarcina acetivorans Sowers et al. 1986
               03 Methanosarcina baltica von Klein et al. 2002
               04 Methanosarcina frisia (Blotevogel et al. 1986) Blotevogel and Fischer 1989
               05 Methanosarcina lacustris Simankova et al. 2002
               06 Methanosarcina mazei (Barker 1936) Mah and Kuhn 1984
               07 Methanosarcina methanica (Smit 1930) Kluyver and van Niel 1936 (Approved Lists 1980)
               08 Methanosarcina semesiae Lyimo et al. 2000
               09 Methanosarcina siciliae (Stetter and König 1989) Ni et al. 1994
               10 Methanosarcina thermophila Zinder et al. 1985
               11 Methanosarcina vacuolata Zhilina and Zavarzin 1987