''Methanococcus'' is a genus of coccus, coccoid methanogens of the family Methanococcaceae. They are all mesophiles, except the thermophilic ''Methanococcus thermolithotrophicus, M. thermolithotrophicus'' and the hyperthermophilic ''Methanococcus jannaschii, M. jannaschii''. The latter was discovered at the base of a "white smoker" chimney at 21°latitude, N on the East Pacific Rise and it was the first archaeal genome to be completely sequenced, revealing many novel and eukaryote-like elements.
Phylogeny
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI).
See also
* List of Archaea genera
References
Further reading
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Archaea genera
Euryarchaeota
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