| brazil | | uncultured hydrogenophilus sp. | species | 105 | 0 |
| chile | | uncultured hydrogenophilus sp. | species | 1 | 0 |
| china | | uncultured hydrogenophilus sp. | species | 1 | 0 |
| china | jiangsu | uncultured hydrogenophilus sp. | species | 3 | 0 |
| italy | | uncultured hydrogenophilus sp. | species | 2 | 0 |
| mexico | yucatan | uncultured hydrogenophilus sp. | species | 1 | 0 |
| russia | | uncultured hydrogenophilus sp. | species | 6 | 0 |
| slovakia | | uncultured hydrogenophilus sp. | species | 1 | 0 |