| Class | Order | Family | Genus | Species |
|---|---|---|---|---|
| Candidatus Dadabacteria | 1 | 3 | 3 | 10 |
| Candidatus Desulfofervidia | 1 | 1 | 1 | 3 |
| Deferrisomatia | 1 | 1 | 1 | 6 |
| Desulfarculia | 2 | 2 | 5 | 25 |
| Desulfobaccia | 1 | 1 | 1 | 10 |
| Desulfobacteria | 2 | 14 | 34 | 347 |
| Desulfobulbia | 1 | 4 | 19 | 381 |
| Desulfomonilia | 1 | 1 | 1 | 13 |
| Desulfovibrionia | 1 | 8 | 37 | 981 |
| Desulfuromonadia | 2 | 8 | 21 | 348 |
| Dissulfuribacteria | 1 | 1 | 1 | 4 |
| Syntrophia | 1 | 2 | 2 | 153 |
| Syntrophobacteria | 1 | 2 | 11 | 100 |
| Syntrophorhabdia | 1 | 1 | 1 | 42 |
| Thermodesulfobacteria | 1 | 2 | 6 | 57 |