| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Ameiurus nebulosus (Lesueur 1819) (brown bullhead) | 0 | 2 | 0 |
| Amiskwia | 0 | 2 | 0 |
| Amiskwiidae | 1 | 0 | 0 |
| Ammodramus Swainson 1827 | 0 | 2 | 0 |
| Ammodytidae (sand lances) | 0 | 2 | 0 |
| Ammotragus Blyth 1840 | 1 | 0 | 0 |
| Ammotragus lervia (Pallas 1777) (Aoudad) | 0 | 2 | 0 |
| Amniota (amniotes) | 1 | 0 | 0 |
| Amoebozoa (amoeboid protists) | 1 | 0 | 0 |
| Amorphea | 1 | 0 | 0 |
| Ampedus | 1 | 0 | 0 |
| Ampedus sanguinolentus | 0 | 2 | 0 |
| Lissamphibia (amphibians) | 1 | 2 | 0 |
| Amphiesmenoptera | 1 | 0 | 0 |
| Amphioxiformes | 1 | 0 | 0 |
