| Species | RefIntense Num | Refseq Num | Source |
|---|---|---|---|
| Methanobrevibacter woesei | 1 | 1 | MGYG |
| Methanomassiliicoccus luminyensis | 1 | 2 | MGYG |
| Methanosphaera cuniculi | 1 | 2 | MGYG |
| Methanosphaera stadtmanae | 2 | 3 | HMP/MGYG |
| Methylacidiphilum infernorum | 1 | 1 | HMP |
| Methylibium petroleiphilum | 1 | 1 | HMP |
| Methylobacillus flagellatus | 1 | 1 | HMP |
| Methylobacterium nodulans | 1 | 1 | HMP |
| Methylobacterium radiotolerans | 1 | 6 | HMP |
| Methylocella silvestris | 1 | 2 | HMP |