| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Acestrorhynchidae | 0 | 0 | 12 |
| Acetobacteraceae | 0 | 0 | 12 |
| Achaemenothrombiidae | 0 | 0 | 12 |
| Achariaceae | 0 | 0 | 12 |
| Achatinellidae | 0 | 0 | 12 |
| Achatinidae | 0 | 0 | 12 |
| Achatocarpaceae | 0 | 0 | 12 |
| Acherontacaridae | 0 | 0 | 12 |
| Achilidae | 0 | 0 | 12 |
| Achilixiidae | 0 | 0 | 12 |
| Achilixiinae | 0 | 0 | 2 |
| Achipteriidae Thor 1929 | 0 | 0 | 12 |
| Achiridae | 0 | 0 | 12 |
| Rhombosoleidae | 0 | 0 | 24 |
| Achnanthaceae | 0 | 0 | 12 |
