methanothermobacter marburgensis methanothermobacter marburgensis methanothermobacter marburgensis is a thermophilic and obligately autotrophic archaeon. its type strain is marburgt. its genome has been sequenced. methanothermobacter marburgensis scientific classification domain: archaea kingdom: euryarchaeota phylum: euryarchaeota class: methanobacteria order: methanobacteriales family: methanobacteriaceae genus: methanothermobacter species: m. marburgensiswasserfallen et al. 2000 binomial name methanothermobacter marburgensis it is named after the city of marburg in germany, where it was isolated from sewage sludge, but it also lives in hot springs. the cells are slender and bar-shaped. they reduce carbon dioxide and hydrogen for energy, but they can also metabolize ethyl.