methanothermobacter methanothermobacter in taxonomy, methanothermobacter is a genus of the methanobacteriaceae. the species within this genus are thermophilic and grow best at temperatures between 55°c and 65°c. they are methanogens; they use carbon dioxide and hydrogen as substrates to produce methane for energy. methanothermobacter methanothermobacter thermautotrophicus scientific classification domain: archaea kingdom: euryarchaeota class: methanobacteria order: methanobacteriales family: methanobacteriaceae genus: methanothermobacterwasserfallen et al. 2000 type species methanothermobacter thermautotrophicus(zeikus & wolfe 1972) wasserfallen et al. 2000 species m. crinale m. defluvii m. marburgensis m. tenebrarum m. thermautotrophicus m. thermoflexus m. thermophilus m. wolfei synonyms "methanobacter" boone et al. 1993 phase contrast image of methano­thermobacter marburgensis dsm 2133. specimen was obtained in late exponential phase from a fed-batch fermentation. the cells are rod shaped and elongated. phylogeny the currently accepted taxonomy is based on the list of prokaryotic names with standing in nomenclature (lpsn) and national center for biotechnology information (ncbi). 16s rrna-based ltp_01_2022 53 marker proteins based gtdb 07-rs207 methanobacteriaceae methanothermobacter m. crinale m. tenebrarum species‑group 2 methanothermobacter m. defluvii m.thermautotrophicus m. thermoflexus m. thermophilus methanobacterium thermaggregans m. marburgensis m. wolfei methanobacterium species-group 2 methanobacterium methanosphaera methanobrevibacter m. tenebrarum "methanothermobacteraceae" m. wolfei m.marburgensis m. thermautotrophicus methanothermobacter methanobacteriaceae methanobrevibacter methanobacterium species-group 2 methanosphaera methanobacterium