| china | | uncultured methanomassiliicoccus sp. | species | 216 | 0 |
| czech republic | | uncultured methanomassiliicoccus sp. | species | 1 | 0 |
| india | | uncultured methanomassiliicoccus sp. | species | 2 | 0 |
| japan | | uncultured methanomassiliicoccus sp. | species | 1 | 0 |
| kuwait | | uncultured methanomassiliicoccus sp. | species | 1 | 0 |
| nigeria | | uncultured methanomassiliicoccus sp. | species | 78 | 0 |
| slovakia | | uncultured methanomassiliicoccus sp. | species | 1 | 0 |