Methanococcus thermolithotrophicus Dataset NCBI Taxonomy Classification phylum Euryarchaeota class Methanococci order Methanococcales family Methanococcaceae genus Methanothermococcus species Methanothermococcus thermolithotrophicus Name Homonyms Methanococcus thermolithotrophicus Methanococcus thermolithotrophicus Huber et al. 1984