Pyrococcus horikoshii OT-3 Dataset NCBI Taxonomy Classification phylum Euryarchaeota class Thermococci order Thermococcales family Thermococcaceae genus Pyrococcus species Pyrococcus horikoshii Name Homonyms Pyrococcus horikoshii Pyrococcus horikoshii OT-3 Pyrococcus horikoshii Gonzlez et al. 1999