methanolobus methanolobus in taxonomy, methanolobus is a genus of methanogenic archaea within the methanosarcinaceae. these organisms are strictly anaerobes and live exclusively through the production of methane, but the species within methanolobus cannot use carbon dioxide with hydrogen, acetate or formate, only methyl compounds. the cells are irregular coccoid in form and approximately 1 μm in diameter. they do not form endospores. they are gram negative and only some are motile, via a single flagellum. they are found in lake and ocean sediments that lack oxygen. methanolobus scientific classification domain: archaea kingdom: euryarchaeota phylum: euryarchaeota class: methanomicrobia order: methanosarcinales family: methanosarcinaceae genus: methanolobus binomial name methanolobuskonig and stetter 1983 species m. bombayensis m. oregonensis m. profundi m. taylorii m. tindarius m. vulcani