| Class | Order | Family | Genus | Species |
|---|---|---|---|---|
| Anaerolineae | 2 | 5 | 21 | 300 |
| Ardenticatenia | 3 | 3 | 8 | 28 |
| Caldilineae | 1 | 2 | 4 | 41 |
| Candidatus Limnocylindria | 1 | 1 | 2 | 7 |
| Candidatus Martimicrobia | 1 | 1 | 2 | 2 |
| Candidatus Spiritibacteria | 1 | 1 | 3 | 8 |
| Candidatus Tarhunnaeia | 1 | 1 | 2 | 3 |
| Candidatus Thermofonsia | 1 | 1 | 2 | 12 |
| Candidatus Uliximicrobia | 1 | 1 | 1 | 4 |
| Chloroflexia | 5 | 7 | 16 | 123 |
| Dehalococcoidia | 3 | 3 | 4 | 348 |
| Ktedonobacteria | 2 | 6 | 8 | 85 |
| Tepidiformia | 1 | 1 | 3 | 10 |
| Thermoflexia | 1 | 1 | 1 | 9 |