| Label | Id | |
|---|---|---|
| Coelopyniini | 1395062 | |
| Coilinae | 365066 | |
| Collapsimycopappus | 2250630 | |
| Collaria | 567506 | |
| Coranthus | 1431506 | |
| Corioxenidae | 50667 | |
| Crepidinae | 745067 | |
| Crinoidea | 35069 | |
| Critonia | 506627 | |
| Crohivirus | 1506581 | |
| Cryptopotamon | 1550653 | |
| Culcua | 931506 | |
| Cultus | 50624 | |
| Cyanonectria | 5506 | |
| Cycladophora | 2506154 |