organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Count: [p] 5k89p165c61o29f1,209g193s; †1p2c7g2s
   Kingdom Monera Haeckel 1866 see Domain Bacteria Woese et al. 1990
  Count: [p] 16p23c7o9f190g29s
     Phylum Methaneocreatrices Margulis and Schwartz 1982 see Phylum Euryarchaeota Garrity and Holt 2001
    Count: [g] 3g1s
       Genus Methanobacterium Kluyver and van Niel 1936 (Approved Lists 1980)
      Count: 1s
         Methanobacterium ruminantium Smith and Hungate 1958 (Approved Lists 1980) see Methanobrevibacter ruminantium (Smith and Hungate 1958) Balch and Wolfe 1981
        Count: -