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 Methanobacillus Count: - 1 Genus Methanosarcina Kluyver and van Niel 1936 (Approved Lists 1980) Count: - 2 Genus Methanobacterium Kluyver and van Niel 1936 (Approved Lists 1980) Count: 1s 3 Genus Methanococcus Kluyver and van Niel 1936 (Approved Lists 1980) Count: -