| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| 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 | |
| Mageeibacillus indolicus T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Mageeibacillus | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Macromonas bipunctata | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Macromonas | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Macrococcus lamae | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Macrococcus hajekii | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Macrococcus goetzii | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago |