| craterostomum acuticaudatum | species | eukaryota | invertebrates | species | 74591 |
| cyathostomum tetracanthum | species | eukaryota | invertebrates | species | 475190 |
| cylicocyclus auriculatus | species | eukaryota | invertebrates | species | 71428 |
| cylicocyclus radiatus | species | eukaryota | invertebrates | species | 71430 |
| cylicostephanus calicatus | species | eukaryota | invertebrates | species | 71464 |
| strongylus asini | species | eukaryota | invertebrates | species | 52887 |
| triodontophorus minor | species | | | species | 1735159 |