| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Marinobacter aquaeolei | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Marinobacter alexandrii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Mariniplasma | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Mariniplasma anaerobium T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Marinilongibacter | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Marinilongibacter aquaticus T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Marinilactibacillus kalidii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Marinilabilia agarovorans | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Marinifilum caeruleilacunae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Marinicola | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Marinicola seohaensis T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Marinicaulis | ||||
| Marinicaulis aureum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Marinibacillus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Marinibacillus marinus T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Marinibacillus campisalis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Marinagarivorans cellulosilyticus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Maridesulfovibrio salinus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Marichromatium fluminis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Maribellus maritimus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Maribaculum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Maribaculum marinum T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Mangrovimonas futianensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Mangrovicoccus algicola | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Mangrovactinospora | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Mangrovactinospora gilvigrisea T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Mameliella sediminis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Mameliella phaeodactyli | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Mameliella atlantica | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Malacoplasma | Unknown | Valid (ICNP) | Excubia bot over 3 years ago |