MeSH definition : A species of halophilic archaea whose organisms are nonmotile. Habitats include freshwater
and marine mud, animal-waste lagoons, and the rumens of ungulates.;
MeSH annotation : a gram-pos methanogen found in mud & ungulate rumens;
Wikipedia link : https://en.wikipedia.org/wiki/Methanosarcina barkeri;
A species of halophilic archaea whose organisms are nonmotile. Habitats include freshwater
and marine mud, animal-waste lagoons, and the rumens of ungulates.