Methanococcus Kluyver & van Niel, 1936 Dataset Integrated Taxonomic Information System (ITIS) Rank GENUS Classification kingdom Archaea phylum Euryarchaeota class Methanococci order Methanococcales family Methanococcaceae genus Methanococcus Name Homonyms Methanococcus Kluyver & van Niel, 1936