| 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 |
| Methanobrevibacter acididurans | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobrevibacter |
| Methanobrevibacter arboriphilus | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobrevibacter |
| Methanobrevibacter boviskoreani | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobrevibacter |
| Methanobrevibacter curvatus | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobrevibacter |
| Methanobrevibacter cuticularis | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobrevibacter |
| Methanobrevibacter filiformis | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobrevibacter |
| Methanobrevibacter gottschalkii | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobrevibacter |
| Methanobrevibacter millerae | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobrevibacter |
| Methanobrevibacter olleyae | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobrevibacter |
| Methanobrevibacter oralis | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobrevibacter |
| Methanobrevibacter ruminantium | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobrevibacter |
| Methanobrevibacter smithii | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobrevibacter |
| Methanobrevibacter thaueri | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobrevibacter |
| Methanobrevibacter woesei | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobrevibacter |
| Methanobrevibacter wolinii | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanobrevibacter |
| Methanosphaera cuniculi | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanosphaera |
| Methanosphaera stadtmanae | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanosphaera |
| Methanothermobacter crinale | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanothermobacter |
| Methanothermobacter defluvii | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanothermobacter |
| Methanothermobacter marburgensis | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanothermobacter |
| Methanothermobacter tenebrarum | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanothermobacter |
| Methanothermobacter thermautotrophicus | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanothermobacter |
| Methanothermobacter thermoflexus | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanothermobacter |
| Methanothermobacter thermophilus | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanothermobacter |
| Methanothermobacter wolfeii | Methanobacteria | Methanobacteriales | Methanobacteriaceae | Methanothermobacter |