| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Methanobacterium ferruginis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobacterium espanolae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobacterium congolense | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobacterium bryantii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobacterium beijingense | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobacterium arcticum | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobacterium alcaliphilum | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobacterium aggregans | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobacterium aarhusense | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobacterium | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobacteriaceae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobacteriales | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobacteria | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanimicrococcus blatticola T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanimicrococcus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanosarcinaceae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanosarcinales | ||||
| Metasolibacillus meyeri T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Metasolibacillus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Metaplanococcus flavidus T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Metaplanococcus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Metalysinibacillus jejuensis T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Metalysinibacillus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Metallosphaera tengchongensis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Metallosphaera sedula T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Metallosphaera prunae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Metallosphaera hakonensis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Metallosphaera cuprina | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Metallosphaera | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Metallibacterium scheffleri T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago |