methanosarcina thermophila methanosarcina thermophila methanosarcina thermophila is a thermophilic, acetotrophic, methane-producing archaeon. methanosarcina thermophila scientific classification domain: archaea kingdom: euryarchaeota phylum: euryarchaeota class: methanomicrobia order: methanosarcinales family: methanosarcinaceae genus: methanosarcina species: m. thermophila binomial name methanosarcina thermophilamccammon and bowman 2000