life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Status: extant; Count: -
   Superkingdom Prokarya see Domain Bacteria Woese et al. 1990
  Status: extant; Count: [p] 1k14p2c5o2f241g42s
     Kingdom Bacteria (Cohn 1870) Cavalier-Smith 1983 - bacteria see Kingdom Bacteria Cavalier-Smith 2002
    Status: extant; Count: [p] 14p2c5o2f241g42s
       Subkingdom Archaea Woese et al. 1990 see Domain Archaea Woese et al. 1990
      Status: extant; Count: [p] 2p34g10s
         Division Mendosicutes Murray 1984 see Domain Archaea Woese et al. 1990
        Status: extant; Count: [p] 2p34g10s
           Phylum Euryarchaeota Garrity and Holt 2001
          Status: extant; Count: 25g8s
             methanogens see Phylum Euryarchaeota Garrity and Holt 2001
            Status: extant; Count: 6g1s
               Genus Methanobacterium Kluyver and van Niel 1936 (Approved Lists 1980)
              Status: extant; Count: 1s
                 Methanobacterium ruminantium Smith and Hungate 1958 (Approved Lists 1980) see Methanobrevibacter ruminantium (Smith and Hungate 1958) Balch and Wolfe 1981
                Status: extant; Count: -