| china | yunnan | hydrogenobaculum sp. t-6 | species | 1 | 0 |
| nigeria | | uncultured hydrogenobaculum sp. | species | 3 | 0 |
| russia | kamchatka krai | uncultured hydrogenobaculum sp. | species | 27 | 0 |
| russia | kostroma oblast | uncultured hydrogenobaculum sp. | species | 4 | 0 |
| united states | california | hydrogenobaculum sp. nor3l3b | species | 1 | 0 |
| united states | california | hydrogenobaculum sp. y04aap1 | species | 2 | 0 |
| united states | california | hydrogenobaculum sp. y04aas1 | species | 1 | 0 |
| united states | california | hydrogenobaculum sp. y04anc1 | species | 2 | 0 |
| united states | california | hydrogenobaculum sp. y04as1 | species | 1 | 0 |
| united states | california | uncultured hydrogenobaculum sp. | species | 35 | 0 |
| united states | montana | hydrogenobaculum | genus | 0 | 1 |
| united states | new mexico | hydrogenobaculum | genus | 0 | 1 |
| united states | wyoming | hydrogenobaculum | genus | 0 | 2 |
| united states | wyoming | hydrogenobaculum sp. nor3l3b | species | 1 | 0 |
| united states | wyoming | uncultured hydrogenobaculum sp. | species | 7 | 0 |