Methanococcus frisius Blotevogel et al. 1986 Dataset NCBI Taxonomy Classification phylum Euryarchaeota class Methanomicrobia order Methanosarcinales family Methanosarcinaceae genus Methanosarcina species Methanosarcina mazei Name Homonyms Methanococcus frisius Methanococcus frisius Blotevogel et al. 1986