| algeria | algiers province | pyrococcus sp. ht3 | species | 1 | 0 |
| antarctica | | thermococcus sp. bx13 | species | 1 | 0 |
| antarctica | | thermococcus sp. enr5 | species | 1 | 0 |
| antarctica | | uncultured thermococcus sp. | species | 2 | 0 |
| bahamas | | uncultured thermococci archaeon | species | 4 | 0 |
| canada | newfoundland and labrador | pyrococcus | genus | 0 | 1 |
| canada | newfoundland and labrador | thermococcus | genus | 0 | 1 |
| china | | thermococcaceae archaeon enrichment culture | species | 1 | 0 |
| china | | thermococcus alcaliphilus | species | 1 | 0 |
| china | | thermococcus sp. enrichment clone sa3 | species | 1 | 0 |
| china | | thermococcus sp. enrichment culture | species | 11 | 0 |
| china | | thermococcus sp. enrichment culture clone b11-a-63 | species | 1 | 0 |
| china | | uncultured thermococcus sp. | species | 156 | 0 |
| china | henan | uncultured thermococcus sp. | species | 1 | 0 |
| china | yunnan | thermococcus sp. | species | 1 | 0 |
| egypt | | uncultured thermococcus sp. | species | 1 | 0 |
| france | | thermococcus hydrothermalis | species | 1 | 0 |
| greece | north aegean region | thermococcus sp. p6 | species | 2 | 0 |
| india | | uncultured palaeococcus sp. | species | 11 | 0 |
| india | | uncultured pyrococcus sp. | species | 2 | 0 |
| india | | uncultured thermococcus sp. | species | 34 | 0 |
| italy | | palaeococcus helgesonii | species | 2 | 0 |
| italy | | thermococcus alcaliphilus | species | 29 | 0 |
| italy | | thermococcus celer | species | 1 | 0 |
| italy | sicily autonomous region | palaeococcus helgesonii | species | 2 | 0 |
| italy | sicily autonomous region | thermococcus celer | species | 1 | 0 |
| italy | veneto region | thermococcus celer | species | 117 | 0 |
| japan | | thermococcus celericrescens | species | 149 | 0 |
| japan | | thermococcus sp. cku-1 | species | 1 | 0 |
| japan | | thermococcus sp. tm1 | species | 1 | 0 |
| japan | kagoshima prefecture | thermococcus sp. kba1 | species | 1 | 0 |
| japan | kagoshima prefecture | uncultured thermococcales archaeon | species | 2 | 0 |
| japan | niigata prefecture | thermococcus | genus | 0 | 1 |
| japan | okinawa prefecture | pyrococcus | genus | 0 | 1 |
| japan | okinawa prefecture | pyrococcus sp. fla95-pc | species | 1 | 0 |
| japan | okinawa prefecture | pyrococcus sp. ns102-t | species | 1 | 0 |
| japan | okinawa prefecture | thermococcus sp. 300-tc | species | 1 | 0 |
| japan | okinawa prefecture | thermococcus sp. ag85-vw | species | 1 | 0 |
| japan | okinawa prefecture | thermococcus sp. ns85-t | species | 1 | 0 |
| japan | okinawa prefecture | thermococcus sp. tc70-vw | species | 1 | 0 |
| japan | okinawa prefecture | uncultured thermococcales archaeon | species | 1 | 0 |
| japan | okinawa prefecture | uncultured thermococcus sp. | species | 1 | 0 |
| mexico | | thermococcus aggregans | species | 1 | 0 |
| mexico | | thermococcus piezophilus | species | 2 | 0 |
| mexico | | thermococcus radiotolerans | species | 2 | 0 |
| new zealand | | thermococcus pacificus | species | 1 | 0 |
| new zealand | bay of plenty | thermococcus gorgonarius | species | 2 | 0 |
| new zealand | bay of plenty | thermococcus pacificus | species | 2 | 0 |
| nigeria | | uncultured palaeococcus sp. | species | 3 | 0 |
| nigeria | | uncultured pyrococcus sp. | species | 17 | 0 |
| nigeria | | uncultured thermococcus sp. | species | 32 | 0 |
| russia | altai krai | thermococcus sibiricus | species | 2 | 0 |
| russia | altai krai | thermococcus sibiricus mm 739 | no rank | 3 | 0 |
| united states | | thermococcus sp. mcr132 | species | 1 | 0 |
| united states | | thermococcus sp. mcr133 | species | 1 | 0 |
| united states | | thermococcus sp. mcr134 | species | 1 | 0 |
| united states | | thermococcus sp. mcr135 | species | 1 | 0 |
| united states | | thermococcus sp. mcr175 | species | 1 | 0 |
| united states | | thermococcus thioreducens | species | 84 | 0 |
| united states | | uncultured thermococcus sp. | species | 2 | 0 |
| united states | alaska | thermococcales archaeon 44_46 | species | 273 | 0 |
| united states | alaska | thermococcus sibiricus | species | 108 | 0 |
| united states | alaska | thermococcus sp. 40_45 | species | 103 | 0 |
| united states | alaska | thermococcus sp. pk(2011) | species | 1 | 0 |
| united states | alaska | uncultured thermococcus sp. | species | 1 | 0 |
| united states | california | thermococcus sp. vp197 | species | 1 | 0 |
| united states | california | uncultured archaeon o14f1 | species | 1 | 0 |
| united states | california | uncultured archaeon o18a6 | species | 1 | 0 |
| united states | california | uncultured archaeon o18c3 | species | 1 | 0 |
| united states | california | uncultured archaeon o23c2 | species | 1 | 0 |