| Name | Class | Order | Family | Genus |
|---|---|---|---|---|
| Methanobacterium aarhusense | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium alcaliphilum | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium arcticum | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium beijingense | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium bryantii | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium congolense | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium espanolae | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium ferruginis | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium flexile | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium formicicum | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium ivanovii | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium kanagiense | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium lacus | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium movens | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium movilense | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium oryzae | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium palustre | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium petrolearium | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium subterraneum | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium thermaggregans | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium uliginosum | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |
| Methanobacterium veterum | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobacterium |