Pyrococcus Dataset NCBI Taxonomy Rank GENUS Classification phylum Euryarchaeota class Thermococci order Thermococcales family Thermococcaceae genus Pyrococcus Name Synonyms Pyrococcus Fiala and Stetter 1986 Homonyms Pyrococcus Pyrococcus GI-J Pyrococcus Fiala and Stetter 1986