| Cynodictis(noun, creature, appearance, eocene) |
| Danian first appearance(expression, appearance, period, paleocene) |
| Daphoenus(noun, creature, appearance, eocene) |
| Dermotherium(noun, creature, appearance, eocene) |
| Diamantomyidae(noun, creature, appearance, eocene) |
| Dichobunidae(noun, creature, appearance, eocene) |
| Dinocerata(noun, creature, appearance, paleocene) |
| Dinopanorpidae(noun, creature, appearance, paleocene) |
| Diplocynodon(noun, creature, appearance, paleocene) |
| Diplocynodontinae(noun, creature, appearance, eocene) |
| Discoaster(noun, creature, appearance, paleocene) |
| Dolichoderus vectensis(expression, creature, appearance, eocene) |
| Dromornithidae(noun, creature, appearance, oligocene) |
| Echinopedinidae(noun, creature, appearance, eocene) |
| Ecphora(noun, creature, appearance, eocene) |
| Ekgmowechashala(noun, creature, appearance, oligocene) |
| Entelodont(noun, creature, appearance, eocene) |
| Eomyidae(noun, creature, appearance, eocene) |
| Eosimiidae(noun, creature, appearance, eocene) |
| Epoicotheriidae(noun, creature, appearance, eocene) |