| Methanococcus | |
|---|---|
| Scientific classification | |
| Domain: | Archaea |
| Kingdom: | Euryarchaeota |
| Phylum: | Euryarchaeota |
| Class: | Methanococci |
| Order: | Methanococcales |
| Family: | Methanococcaceae |
| Genus: | Methanococcus |
| Binomial name | |
|
Methanococcus Kluyver and van Niel 1936 emend. Barker 1936 (Approved Lists 1980) |
|
| Species | |
Methanococcus is a genus of coccoid methanogens of the family Methanococcaceae. They are all mesophiles, except the thermophilic M. thermolithotrophicus and the hyperthermophilic M. jannaschii. The latter was discovered at the base of a “white smoker” chimney at 21°N on the East Pacific Rise and it was the first archaeal genome to be completely sequenced, revealing many novel and eukaryote-like elements.