| Metopaster(noun, fauna, eocene, extinction) |
| Miohippus(noun, creature, geohistory, appearance, eocene) |
| Nanotragulus(noun, creature, geohistory, appearance, eocene) |
| Notharctidae(noun, creature, geohistory, appearance, eocene) |
| Notharctinae(noun, creature, geohistory, appearance, eocene) |
| Notohippidae(noun, creature, geohistory, appearance, eocene) |
| Notostylopidae(noun, creature, geohistory, appearance, eocene) |
| Oligopithecidae(noun, creature, geohistory, appearance, eocene) |
| Oromerycidae(noun, creature, geohistory, appearance, eocene) |
| Oxyaena(noun, fauna, eocene, extinction) |
| Pachyaena(noun, fauna, eocene, extinction) |
| Pagrus(noun, creature, geohistory, appearance, eocene) |
| Pakicetidae(noun, creature, geohistory, appearance, eocene) |
| Palaeoamasiidae(noun, creature, geohistory, appearance, eocene) |
| Palaeocarpilius(noun, creature, geohistory, appearance, eocene) |
| Palaeochiropterygidae(noun, creature, geohistory, appearance, eocene) |
| Palaeogale(noun, creature, geohistory, appearance, eocene) |
| Palaeoglaux(noun, fauna, eocene, extinction) |
| Palaeomerycidae(noun, creature, geohistory, appearance, eocene) |
| Palaeonictis(noun, fauna, eocene, extinction) |