Methanococcus fervens Jeanthon et al. 1999 Dataset NCBI Taxonomy Classification phylum Euryarchaeota class Methanococci order Methanococcales family Methanocaldococcaceae genus Methanocaldococcus species Methanocaldococcus fervens Name Homonyms Methanococcus fervens Methanococcus fervens Jeanthon et al. 1999