Methanofervidicoccus Sakai et al. 2019 Methanofervidicoccus Sakai et al. 2019 Methanofervidicoccus abyssi Sakai et al. 2019 Universal Root Woese et al. 1990 Archaea Woese et al. 1990 Euryarchaeota (sic) Garrity and Holt 2001 Methanobacteriota corrig. Garrity and Holt 2001 Methanococci Boone 2002 Methanococcales Balch and Wolfe 1981 Methanococcaceae Balch and Wolfe 1981 Methanofervidicoccus Sakai et al. 2019 Methanococcaceae Balch and Wolfe 1981 Methanothermococcus Whitman 2002 Methanococcus Kluyver and van Niel 1936 (Approved Lists 1980) emend. Mah and Kuhn 1984 Methanofervidicoccus abyssi Sakai et al. 2019 Sakai S. Takaki Y. Miyazaki M. Ogawara M. Yanagawa K. Miyazaki J. Takai K. Methanofervidicoccus abyssi gen. nov., sp. nov., a hydrogenotrophic methanogen, isolated from a hydrothermal vent chimney in the Mid-Cayman Spreading Center, the Caribbean Sea. 2019 69 4 1225 1230 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.003297 30843780 Sakai S. Takaki Y. Miyazaki M. Ogawara M. Yanagawa K. Miyazaki J. Takai K. Methanofervidicoccus abyssi gen. nov., sp. nov., a hydrogenotrophic methanogen, isolated from a hydrothermal vent chimney in the Mid-Cayman Spreading Center, the Caribbean Sea. 2019 69 4 1225 1230 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.003297 30843780