| Bumblebee(noun, creature, geohistory, eocene) |
| Buttonquail(noun, creature, geohistory, rupelian) |
| Cactus(noun, creature, geohistory, eocene) |
| Caiman(noun, creature, geohistory, paleocene) |
| Calamus(noun, creature, geohistory, rupelian) |
| Callichthyidae(noun, creature, geohistory, paleocene) |
| Cane rat(expression, creature, geohistory, eocene) |
| Canidae(noun, creature, geohistory, eocene) |
| Caprimulgiformes(noun, creature, geohistory, paleocene) |
| Caproidae(noun, creature, geohistory, eocene) |
| Caranx(noun, creature, geohistory, eocene) |
| Carpilioidea(noun, creature, geohistory, paleocene) |
| Cassidulina(noun, creature, geohistory, eocene) |
| Cassis(noun, creature, geohistory, paleocene) |
| Castoridae(noun, creature, geohistory, eocene) |
| Castorimorpha(noun, creature, geohistory, eocene) |
| Catarrhini(noun, creature, geohistory, eocene) |
| Cathartiformes(noun, creature, geohistory, eocene) |
| Cathaya(noun, creature, geohistory, rupelian) |
| Celleporidae(noun, creature, geohistory, eocene) |