| Class | Order | Family | Genus | Species |
|---|---|---|---|---|
| Alicyclobacillia | 1 | 1 | 0 | 1 |
| Bacilli | 6 | 39 | 342 | 68006 |
| Candidatus Fermentithermobacillia | 1 | 1 | 1 | 6 |
| Clostridia | 17 | 83 | 627 | 11008 |
| Culicoidibacteria | 1 | 1 | 1 | 4 |
| Desulfitisporia | 1 | 1 | 1 | 4 |
| Desulfuribacillia | 1 | 1 | 1 | 4 |
| Dethiobacteria | 1 | 1 | 2 | 9 |
| Erysipelotrichia | 1 | 3 | 48 | 571 |
| Limnochordia | 1 | 2 | 3 | 9 |
| Negativicutes | 4 | 9 | 37 | 1194 |
| Thermolithobacteria | 1 | 1 | 1 | 4 |
| Tissierellia | 1 | 12 | 41 | 622 |