| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Mumia quercus | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Moraxella nasicaprae | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Moorella sulfitireducens | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Moorella caeni | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Microvirga terrae | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Micromonospora solifontis | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Micromonas micra T | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Micrococcus porci | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Microbulbifer zhoushanensis | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Microbulbifer sediminum | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Microbulbifer okhotskensis | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Microbulbifer guangxiensis | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Microbacterium tenebrionis | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Microbacterium kunmingensis | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Microbacterium kunmingense | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Microbacterium ihumii | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Microbacterium allomyrinae | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Methylomonas rapida | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Methylocystis iwaonis | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Metabacillus arenae | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Mesorhizobium onobrychidis | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Membranihabitans maritimus | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Massilia agrisoli | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Marinobacterium sedimentorum | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Marinobacter panjinensis | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Maribacter litopenaei | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Mangrovibacillus | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Mangrovibacillus cuniculi T | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Lysobacter auxotrophicus | Unknown | Valid (ICNP) | Excubia bot over 2 years ago | |
| Luteimonas fraxinea | Unknown | Valid (ICNP) | Excubia bot over 2 years ago |