| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Methanocaldococcus lauensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobrevibacter oralis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobrevibacter arboriphilicus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium wolfei | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium uliginosum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium thermophilum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium thermoformicicum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium thermoflexum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium thermoautotrophicus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium thermoautotrophicum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium thermoalcaliphilum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium thermoaggregans | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium thermautotrophicum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium thermalcaliphilum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium ruminantium | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium mobilis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium mobile | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium defluvii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium arbophilicum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Methanobacterium alkalithermotolerans | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Metascardovia | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Metascardovia criceti T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Metamycoplasma | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Metamycoplasma subdolum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Metamycoplasma sualvi | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Metamycoplasma spumans | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Metamycoplasma salivarium | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Metamycoplasma phocicerebrale | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Metamycoplasma orale | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Metamycoplasma neophronis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago |