| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Aureobacterium arabinogalactanolyticum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aureliella | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aureimonas psammosilene | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aureimonas leprariae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aureibaculum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aureibaculum algae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aurantimonas ureilytica | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aurantimonas manganoxidans | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aurantimonas frigidaquae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aurantimonas altamirensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aurantiacibacter zhengii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aurantiacibacter xanthus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aurantiacibacter spongiae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aurantiacibacter sediminis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aurantiacibacter odishensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aurantiacibacter marinus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aurantiacibacter luteus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aurantiacibacter atlanticus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aurantiacibacter arachoides | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aurantiacibacter aquimixticola | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Atopostipes suicloacale | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Atopobium vaginae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Atopobium rimae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Atopobium parvulum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Asticcacaulis biprosthecum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Asticcacaulis biprosthecius | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aspromonas | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aspromonas composti T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Asinibacterium | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Asinibacterium lactis T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago |