Methanococcus jannaschii Jones et al., 1984 Dataset Prokaryotic Nomenclature Up-to-Date (PNU) Rank SPECIES Published in Int. J. Syst. Bacteriol. 34::503 Classification genus Methanocaldococcus species Methanocaldococcus jannaschii Name Homonyms Methanococcus jannaschii Jones et al., 1984