| Name | Class | Order | Family | Genus |
|---|---|---|---|---|
| Methanosaeta concilii | Methanomicrobia | Methanosarcinales | Methanosaetaceae | Methanosaeta |
| Methanosaeta harundinacea | Methanomicrobia | Methanosarcinales | Methanosaetaceae | Methanosaeta |
| Methanosaeta pelagica | Methanomicrobia | Methanosarcinales | Methanosaetaceae | Methanosaeta |
| Methanosaeta thermophila | Methanomicrobia | Methanosarcinales | Methanosaetaceae | Methanosaeta |