Methanococcus Kluyver & van Niel, 1936 (Approved Lists 1980) Dataset Catalogue of Life Rank GENUS Classification kingdom Methanobacteriati phylum Methanobacteriota class Methanococci order Methanococcales family Methanococcaceae genus Methanococcus Name Homonyms Methanococcus Kluyver & van Niel, 1936 (Approved Lists 1980)