Halomethanococcus mahi Dataset NCBI Taxonomy Classification kingdom Methanobacteriati phylum Methanobacteriota class Methanomicrobia order Methanosarcinales family Methanosarcinaceae genus Methanohalophilus species Methanohalophilus mahii Name Homonyms Halomethanococcus mahi "Halomethanococcus mahi" Paterek and Smith 1985