| Asterostomatidae(noun, creature, geohistory, eocene) |
| Astrapotheriidae(noun, creature, geohistory, eocene) |
| Azibiidae(noun, creature, geohistory, eocene) |
| Barytherium(noun, creature, geohistory, eocene) |
| Basilosaurinae(noun, creature, geohistory, eocene) |
| Bear dog(expression, creature, geohistory, eocene) |
| Borhyaenidae(noun, creature, geohistory, eocene) |
| Borophaginae(noun, creature, geohistory, oligocene) |
| Bothriogenys(noun, creature, geohistory, eocene) |
| Brontotheriidae(noun, creature, geohistory, eocene) |
| Cercamoniinae(noun, creature, geohistory, eocene) |
| Chalicothere(noun, creature, geohistory, eocene) |
| Chalicotherioidea(noun, creature, geohistory, eocene) |
| Chubutherium(noun, creature, geohistory, oligocene) |
| Coeloma(noun, creature, geohistory, eocene) |
| Conoclypus(noun, creature, geohistory, eocene) |
| Cosmopolitodus hastalis(expression, creature, geohistory, eocene) |
| Cynodictis(noun, creature, geohistory, eocene) |
| Daphoenus(noun, creature, geohistory, eocene) |
| Dermotherium(noun, creature, geohistory, eocene) |