| argentina | | uncultured methanogenic archaeon | species | 56 | 0 |
| australia | | uncultured methanogenic archaeon | species | 4 | 0 |
| australia | western australia | uncultured methanogenic archaeon | species | 14 | 0 |
| austria | | uncultured methanogenic archaeon | species | 10 | 0 |
| brazil | | uncultured methanogenic archaeon | species | 13 | 0 |
| canada | | uncultured methanogenic archaeon | species | 194 | 0 |
| canada | quebec | uncultured methanogenic archaeon | species | 22 | 0 |
| china | | uncultured methanogenic archaeon | species | 760 | 0 |
| china | guangxi | uncultured methanogenic archaeon | species | 26 | 0 |
| china | hebei | uncultured methanogenic archaeon | species | 6 | 0 |
| china | jiangsu | uncultured methanogenic archaeon | species | 2 | 0 |
| china | qinghai | uncultured methanogenic archaeon | species | 19 | 0 |
| china | sichuan | uncultured methanogenic archaeon | species | 114 | 0 |
| china | zhejiang | uncultured methanogenic archaeon | species | 112 | 0 |
| czech republic | | uncultured methanogenic archaeon | species | 40 | 0 |
| denmark | | uncultured methanogenic archaeon | species | 105 | 0 |
| egypt | | uncultured methanogenic archaeon | species | 1 | 0 |
| estonia | | uncultured methanogenic archaeon | species | 4 | 0 |
| finland | | uncultured methanogenic archaeon | species | 234 | 0 |
| finland | pirkanmaa region | uncultured methanogenic archaeon | species | 96 | 0 |
| germany | | uncultured methanogenic archaeon | species | 290 | 0 |
| germany | hesse | uncultured methanogenic archaeon | species | 28 | 0 |
| germany | mecklenburg-vorpommern | uncultured methanogenic archaeon | species | 26 | 0 |
| hungary | fejer county | uncultured methanogenic archaeon | species | 3 | 0 |
| india | | uncultured methanogenic archaeon | species | 3 | 0 |
| india | haryana | uncultured methanogenic archaeon | species | 19 | 0 |
| indonesia | | uncultured methanogenic archaeon | species | 1 | 0 |
| italy | | uncultured methanogenic archaeon | species | 38 | 0 |
| japan | | uncultured methanogenic archaeon | species | 5 | 0 |
| japan | aichi prefecture | uncultured methanogenic archaeon | species | 76 | 0 |
| japan | aomori prefecture | uncultured methanogenic archaeon | species | 9 | 0 |
| japan | fukuoka prefecture | uncultured methanogenic archaeon | species | 192 | 0 |
| japan | miyagi ken prefecture | uncultured methanogenic archaeon | species | 23 | 0 |
| japan | okayama prefecture | uncultured methanogenic archaeon | species | 8 | 0 |
| mexico | | uncultured methanogenic archaeon | species | 12 | 0 |
| mexico | sonora | uncultured methanogenic archaeon | species | 13 | 0 |
| netherlands | north holland province | uncultured methanogenic archaeon | species | 2 | 0 |
| norway | | uncultured methanogenic archaeon | species | 373 | 0 |
| philippines | | uncultured methanogenic archaeon | species | 23 | 0 |
| poland | | uncultured methanogenic archaeon | species | 16 | 0 |
| russia | | uncultured methanogenic archaeon | species | 49 | 0 |
| russia | altai krai | uncultured methanogenic archaeon | species | 32 | 0 |
| russia | kostroma oblast | uncultured methanogenic archaeon | species | 1 | 0 |
| south korea | | uncultured methanogenic archaeon | species | 46 | 0 |
| switzerland | | uncultured methanogenic archaeon | species | 43 | 0 |
| united states | | uncultured methanogenic archaeon | species | 1 | 0 |
| united states | colorado | uncultured methanogenic archaeon | species | 5 | 0 |
| united states | florida | uncultured methanogenic archaeon | species | 62 | 0 |
| venezuela | | uncultured methanogenic archaeon | species | 1 | 0 |