| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Methanocaldococcus jannaschii T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanocaldococcus infernus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanocaldococcus indicus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanocaldococcus fervens | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanocaldococcus bathoardescens | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanocaldococcus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanocaldococcaceae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanococcales | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanococci | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanocalculus taiwanensis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanocalculus pumilus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanocalculus natronophilus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanocalculus halotolerans T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanocalculus chunghsingensis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanocalculus alkaliphilus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanocalculus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanocalculaceae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanomicrobiales | ||||
| Methanobrevibacter wolinii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobrevibacter woesei | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobrevibacter thaueri | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobrevibacter smithii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobrevibacter ruminantium T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobrevibacter olleyae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobrevibacter millerae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobrevibacter gottschalkii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobrevibacter filiformis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobrevibacter cuticularis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobrevibacter curvatus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Methanobrevibacter boviskoreani | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago |