| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Massilia forsythiae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Massilia eburnea | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Massilia cavernae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Massilia antarctica | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marivivens geojensis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Maritimibacter dapengensis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Maritalea mediterranea | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Maripseudobacter | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Maripseudobacter aurantiacus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinomonas vulgaris | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinomonas vaga | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinomonas lutimaris | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinomonas basaltis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinomonas aquamarina | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinococcus hispanicus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinococcus albus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinobacterium ramblicola | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinobacterium georgiense | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinobacter orientalis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinobacter mangrovi | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinobacter hydrocarbonoclasticus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinobacter aquaeolei | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinobacter alexandrii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Mariniplasma | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Mariniplasma anaerobium | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinilongibacter | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinilongibacter aquaticus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinilactibacillus kalidii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinilabilia agarovorans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Marinifilum caeruleilacunae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago |