Methanobacterium ruminantium Smith & Hungate, 1958 Dataset Prokaryotic Nomenclature Up-to-Date (PNU) Rank SPECIES Published in Int. J. Syst. Bacteriol. 30::318 Classification genus Methanobrevibacter species Methanobrevibacter ruminantium Name Homonyms Methanobacterium ruminantium Smith & Hungate, 1958