| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Acanthopterygii | 6 | 2 | 0 |
| Acanthoscelidini | 1 | 0 | 0 |
| Acari | 2 | 2 | 0 |
| Acaridae | 1 | 0 | 0 |
| Acariformes | 2 | 0 | 0 |
| Accipiter Brisson 1760 | 2 | 2 | 0 |
| Accipiter gentilis (Linnaeus 1758) (Açor) | 0 | 2 | 0 |
| Accipiter nisus (Linnaeus 1758) | 0 | 2 | 0 |
| Accipitridae | 24 | 2 | 0 |
| Accipitriformes | 3 | 2 | 0 |
| Accipitrimorphae | 1 | 0 | 0 |
| Accipitrinae | 0 | 2 | 0 |
| Acer | 2 | 1 | 0 |
| Acer negundo L. | 0 | 2 | 0 |
| Acer saccharum Marsh. | 0 | 1 | 0 |
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