| Class | Order | Family | Genus | Species |
|---|---|---|---|---|
| Alicyclobacillia | 1 | 1 | 0 | 1 |
| Bacilli | 4 | 22 | 339 | 66148 |
| Candidatus Fermentithermobacillia | 1 | 1 | 1 | 6 |
| Clostridia | 17 | 73 | 611 | 10571 |
| Culicoidibacteria | 1 | 1 | 1 | 2 |
| Desulfitisporia | 1 | 1 | 1 | 3 |
| Desulfuribacillia | 1 | 1 | 1 | 4 |
| Dethiobacteria | 1 | 1 | 2 | 9 |
| Erysipelotrichia | 1 | 3 | 46 | 546 |
| Limnochordia | 1 | 2 | 3 | 9 |
| Negativicutes | 4 | 9 | 43 | 1177 |
| Thermolithobacteria | 1 | 1 | 1 | 4 |
| Tissierellia | 1 | 8 | 40 | 583 |