Methanothermus Stetter et al. 1982 Methanothermus fervidus Stetter et al. 1982 Universal Root Woese et al. 1990 Archaea Woese et al. 1990 Euryarchaeota (sic) Garrity and Holt 2001 Methanobacteriota corrig. Garrity and Holt 2001 Methanobacteria (Murray 1988) Boone 2002 Methanobacteriales Balch and Wolfe 1981 Methanothermaceae Stetter et al. 1982 Methanothermus Stetter et al. 1982 Methanothermaceae Stetter et al. 1982 Methanothermus fervidus Stetter et al. 1982 Methanothermus sociabilis Lauerer et al. 1986 Lauerer G. Kristjansson J.K. Langworthy T.A. König H. Stetter K.O. Methanothermus sociabilis sp. nov., a second species within the Methanothermaceae growing at 97 degrees Celcius. 1986 8 100 105 Systematic and Applied Microbiology Syst Appl Microbiol 0723-2020 Stetter K.O. Thomm M. Winter J. Wildgruber G. Huber H. Zillig W. Janekovic D. König H. Palm P. Wunderl S. Methanothermus fervidus, sp. nov., a novel extremely thermophilic methanogen isolated from an Islandic hot spring. 1981 2 166 178 Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Abteilung I, Originale Zentralbl Bakteriol Mikrobiol Hyg A 0174-3031