| Coelopleurus(noun, creature, geohistory, eocene) |
| Colymboides(noun, creature, geohistory, priabonian) |
| Cone snail(expression, creature, geohistory, eocene) |
| Conger(noun, creature, geohistory, eocene) |
| Conus(noun, creature, geohistory, eocene) |
| Coraciiformes(noun, creature, geohistory, eocene) |
| Corvoidea(noun, creature, geohistory, eocene) |
| Coryphodon(noun, creature, geohistory, paleocene) |
| Coryphodontidae(noun, creature, geohistory, paleocene) |
| Creodonta(noun, creature, geohistory, paleocene) |
| Crommium(noun, creature, geohistory, paleocene) |
| Cuspidaria(noun, creature, geohistory, eocene) |
| Cymatium(noun, creature, geohistory, eocene) |
| Cyprinidae(noun, creature, geohistory, eocene) |
| Daggernose shark(expression, creature, geohistory, eocene) |
| Dairoidea(noun, creature, geohistory, eocene) |
| Danaphos(noun, creature, geohistory, eocene) |
| Diaphus(noun, creature, geohistory, eocene) |
| Dinocerata(noun, creature, geohistory, paleocene) |
| Dinopanorpidae(noun, creature, geohistory, paleocene) |