| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Marinibacillus campisalis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinagarivorans cellulosilyticus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Maridesulfovibrio salinus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marichromatium fluminis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Maribellus maritimus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Maribaculum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Maribaculum marinum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Mangrovimonas futianensis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Mangrovicoccus algicola | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Mangrovactinospora | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Mangrovactinospora gilvigrisea | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Mameliella sediminis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Mameliella phaeodactyli | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Mameliella atlantica | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Malacoplasma | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Malacoplasma penetrans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Malacoplasma muris | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Malacoplasma microti | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Malacoplasma iowae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Malacobacter | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Malacobacter pacificus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Malacobacter mytili | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Malacobacter molluscorum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Malacobacter marinus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Malacobacter halophilus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Malacobacter canalis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Malaciobacter | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Malaciobacter pacificus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Malaciobacter mytili | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Malaciobacter molluscorum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago |