| Label | Id | |
|---|---|---|
| Aterica | 442268 | |
| Athalamia | 122614 | |
| Atlantopandalus | 2268694 | |
| Atlantoxerus | 226854 | |
| Aturidae | 322632 | |
| Atysites | 226881 | |
| Auchmeromyia | 226129 | |
| Auchmeromyiinae | 226128 | |
| Aulacizes | 2269419 | |
| Aulacophorina | 226721 | |
| Aulacophorites | 226722 | |
| Aurantimonas | 182269 | |
| Auriculariales | 5226 | |
| Austrothamnium | 2572226 | |
| Axiidea | 1792265 |