| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Mycolicibacterium palauense | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Mycolicibacterium grossiae | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Mycolicibacterium arseniciresistens | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Mycobacterium chelonae subsp. bovistauri | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Myceligenerans pegani | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Moraxella oculi | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Modicisalibacter radicis | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Micromonospora cathayae | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Microbulbifer magnicolonia | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Microbulbifer bruguierae | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Microbaculum marinisediminis | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Microbacterium salsuginis | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Microbacterium limosum | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Microbacterium abyssi | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Methylomonas defluvii | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Methylomarinovum tepidoasis | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Methylocystis suflitae | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Methanooceanicella | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Methanooceanicella nereidis T | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Metaclostridioides | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Metaclostridioides mangenotii T | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Mesonia profundi | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Massilia luteola | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Massilia litorea | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Massilia cellulosilytica | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Marinomonas rhodophyticola | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Marinomonas phaeophyticola | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Marinobacter salinisoli | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Marinobacter qingdaonensis | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago | |
| Marinobacter azerbaijanicus | Unknown | Valid (ICNP) | Excubia bot almost 2 years ago |