| Name | Class | Order | Family | Genus |
|---|---|---|---|---|
| Methanolinea mesophila | Methanomicrobia | Methanomicrobiales | Methanoregulaceae | Methanolinea |
| Methanolinea tarda | Methanomicrobia | Methanomicrobiales | Methanoregulaceae | Methanolinea |
| Methanoregula boonei | Methanomicrobia | Methanomicrobiales | Methanoregulaceae | Methanoregula |
| Methanoregula formicica | Methanomicrobia | Methanomicrobiales | Methanoregulaceae | Methanoregula |
| Methanosphaerula palustris | Methanomicrobia | Methanomicrobiales | Methanoregulaceae | Methanosphaerula |