methanobacterium methanobacterium in taxonomy, methanobacterium is a genus of the methanobacteriaceae family of archaea. despite the name, this genus belongs not to the bacterial domain but the archaeal domain (for instance, they lack peptidoglycan in their cell walls). methanobacterium are nonmotile and live without oxygen. some members of this genus can use formate to reduce methane; others live exclusively through the reduction of carbon dioxide with hydrogen. they are ubiquitous in some hot, low-oxygen environments, such as anaerobic digestors, their wastewater, and hot springs. methanobacterium scientific classification domain: archaea kingdom: euryarchaeota class: methanobacteria order: methanobacteriales family: methanobacteriaceae genus: methanobacteriumkluyver and van niel 1936 type species methanobacterium formicicumschnellen 1947 species m. aggregans m. aarhusense m. alcaliphilum m. beijingense m. bryantii m. congolense "m. curvum" m. espanolae m. ferruginis m. flexile m. formicicum m. ivanovii m. kanagiense m.lacus m. movens m. movilense m. oryzae m. paludis m. palustre m. petrolearium m. subterraneum m. thermaggregans m. uliginosum m. veterum examples of methanobacterium species methanobacterium bryantii is part of the syntrophic methanobacillus omelianskii culture. methanobacterium thermoautotrophicum marburg can undergo natural genetic transformation, the transfer of dna from one cell to another. genetic transformation in archaeal species, generally, appears to be an adaptation for repairing dna damage in a cell by utilizing intact dna information derived from another cell. 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 methanobacterium m. flexile m. alcaliphilum m. movens m. aarhusense m. beijingense m. movilense m. oryzae m. bryantii m. ivanovii m. veterum m. arcticum m. espanolae species‑group 2 methanosphaera methanobrevibacter methanobacterium m. lacus m. paludis m. aggregans m. congolense m. formicicum m. palustre m. subterraneum m. ferruginis m. kanagiense m. petrolearium methanobacteriaceae methanobrevibacter methanobacterium m. bryantii m. veterum species‑group 2 methanosphaera methanobacterium m. paludis m. aggregans m. congolense m. petrolearium m. formicicum m. subterraneum