| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Amycolata hydrocarbonoxydans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Amycolata autotrophica | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Amycolata alni | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Ampullariella | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Ampullariella regularis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Ampullariella lobata | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Ampullariella digitata | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Ampullariella campanulata | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Amphiplicatus | ||||
| Amphibacillus fermentum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Amorphosporangium | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Amorphosporangium globisporum | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Amorphosporangium auranticolor | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Amoebobacter | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Amoebobacter roseus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Amoebobacter purpureus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Amoebobacter pendens | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Amoebobacter pedioformis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Aminocella | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Aminocella lysinolytica | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Aminithiophilus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Aminithiophilus ramosus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Aminipila terrae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Aminipila luticellarii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Amedibacillus hominis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Alteromonas vaga | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Alteromonas undina | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Alteromonas tetraodonis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Alteromonas rubra | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Alteromonas putrefaciens | Unknown | Valid (ICNP) | Excubia bot over 1 year ago |