| Order | Family | Genus | Species |
|---|---|---|---|
| Acetivibrionales | 1 | 2 | 24 |
| Caldicoprobacterales | 2 | 2 | 14 |
| Candidatus Darwinibacteriales | 2 | 2 | 3 |
| Christensenellales | 1 | 12 | 126 |
| Eubacteriales | 36 | 276 | 6733 |
| Halanaerobiales | 4 | 20 | 138 |
| Koleobacterales | 1 | 1 | 2 |
| Lachnospirales | 6 | 149 | 2281 |
| Lutisporales | 1 | 1 | 5 |
| Mahellales | 1 | 1 | 4 |
| Monoglobales | 1 | 1 | 6 |
| Natranaerobiales | 2 | 5 | 19 |
| Neomoorellales | 4 | 6 | 65 |
| Peptostreptococcales | 11 | 63 | 639 |
| Saccharofermentanales | 2 | 1 | 4 |
| Thermoanaerobacterales | 5 | 18 | 398 |
| Thermosediminibacterales | 2 | 8 | 36 |