| Asterostomatidae(noun, creature, geohistory, appearance, eocene) |
| Astrapotheriidae(noun, creature, geohistory, appearance, eocene) |
| Avitoluvarus(noun, fauna, eocene, extinction) |
| Azibiidae(noun, creature, geohistory, appearance, eocene) |
| Barytherium(noun, creature, geohistory, appearance, eocene) |
| Basilosaurinae(noun, creature, geohistory, appearance, eocene) |
| Borhyaenidae(noun, creature, geohistory, appearance, eocene) |
| Bothriogenys(noun, creature, geohistory, appearance, eocene) |
| Brontotheriidae(noun, creature, geohistory, appearance, eocene) |
| Calciavis(noun, fauna, eocene, extinction) |
| Cercamoniinae(noun, creature, geohistory, appearance, eocene) |
| Chalicothere(noun, creature, geohistory, appearance, eocene) |
| Chalicotherioidea(noun, creature, geohistory, appearance, eocene) |
| Chulpasia(noun, fauna, eocene, extinction) |
| Cimolesta(noun, fauna, eocene, extinction) |
| Coeloma(noun, creature, geohistory, appearance, eocene) |
| Conoclypus(noun, creature, geohistory, appearance, eocene) |
| Copecion(noun, fauna, eocene, extinction) |
| Coryphodon(noun, fauna, eocene, extinction) |
| Crommium(noun, fauna, eocene, extinction) |