| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Malonomonas | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Maliponia aquimaris T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Maliponia | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Malikia spinosa | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Malikia granosa T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Malikia | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Maledivibacter halophilus T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Maledivibacter | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Maioricimonas rarisocia T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Maioricimonas | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Mahella australiensis T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Mahella | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetovibrio blakemorei T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetovibrio | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetospirillum moscoviense | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetospirillum molischianum | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetospirillum marisnigri | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetospirillum magnetotacticum | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetospirillum kuznetsovii | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetospirillum gryphiswaldense | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetospirillum fulvum T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetospirillum caucaseum | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetospirillum | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetospira thiophila T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetospira | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thalassospiraceae | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetococcus marinus T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetococcus | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetococcaceae | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Magnetococcales | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago |