| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Mesobacillus campisalis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Mesobacillus boroniphilus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Mesobacillus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Mesoaciditoga lauensis T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Mesoaciditoga | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Meridianimarinicoccus roseus T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Meridianimarinicoccus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Meridianimaribacter flavus T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Meridianimaribacter | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Merdimonas faecis T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Merdimonas | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Meniscus glaucopis T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Meniscus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Membranicola marinus T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Membranicola | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Melittangium lichenicola | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Melittangium boletus T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Melittangium | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Melissococcus plutonius T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Melissococcus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Melioribacter roseus T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Melioribacter | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Melioribacteraceae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Melghirimyces thermohalophilus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Melghirimyces profundicolus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Melghirimyces algeriensis T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Melghirimyces | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Melghiribacillus thermohalophilus T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Melghiribacillus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Melaminivora jejuensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago |