| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Moraxella nasovis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Moraxella anatipestifera | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Moraxella anatipestifer | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Moorella thermoautotrophica | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Mongoliitalea daihaiensis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Monashia | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Monashia flava | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Moheibacter lacus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Modestobacter deserti | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Mobiluncus curtisii subsp. holmesii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Mobiluncus curtisii subsp. curtisii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Mitsuokella multiacidus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Mitsuokella dentalis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Miniphocibacter | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Miniphocibacter massiliensis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Miniphocaeibacter | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Miniphocaeibacter massiliensis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Miniphocaeibacter halophilus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Miltoncostaea | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Miltoncostaea oceani | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Miltoncostaea marina | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Microvirga roseola | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Microvirga puerhi | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Microvirga lenta | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Microvirga brassicacearum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Microvenator | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Microvenator marinus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Microtetraspora viridis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Microtetraspora tyrrhenii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Microtetraspora turkmeniaca | Unknown | Valid (ICNP) | Excubia bot over 1 year ago |