methanohalophilus methanohalophilus in taxonomy, methanohalophilus is a genus of the methanosarcinaceae. methanohalophilus scientific classification domain: archaea kingdom: euryarchaeota phylum: euryarchaeota class: methanomicrobia order: methanosarcinales family: methanosarcinaceae genus: methanohalophiluspaterek and smith 1988 species methanohalophilus halophilus methanohalophilus mahii methanohalophilus oregonense methanohalophilus portucalensis the species are strictly anaerobic and live solely through the production of methane, using methyl compounds as substrates. the genus methanohalophilus contains three moderately halophilic species, methanohalophilus mahii isolated from utah's great salt lake in the united states, methanohalophilus halophilus isolated from shark bay in australia, and methanohalophilus portucalensis isolated from a salt pan in portugal. it also contains methanohalophilus oregonese, which is alkaliphilic.