| Palaeotheriidae(noun, geohistory, fauna, extinction, oligocene) |
| Pantolestidae(noun, geohistory, fauna, extinction, oligocene) |
| Parapithecidae(noun, geohistory, fauna, extinction, oligocene) |
| Parapithecoidea(noun, geohistory, fauna, extinction, oligocene) |
| Peltosaurus(noun, geohistory, fauna, extinction, oligocene) |
| Proteopithecidae(noun, geohistory, fauna, extinction, oligocene) |
| Pyrotheria(noun, geohistory, fauna, extinction, oligocene) |
| Archaeus(noun, creature, geohistory, thanetian) |
| Gastornithidae(noun, creature, geohistory, thanetian) |
| Pelagornithidae(noun, creature, geohistory, thanetian) |
| Primate(noun, creature, geohistory, thanetian) |
| Yantanglestes(noun, creature, geohistory, thanetian) |
| chattian extinction(noun, fauna, extinction, oligocene) |
| oligocene genus extinction(noun, fauna, extinction, oligocene) |
| rupelian extinction(noun, fauna, extinction, oligocene) |
| cretaceous-paleogene boundary(noun, geohistory, extinction, oligocene) |
| danian first appearance(noun, creature, geohistory, thanetian) |
| eocene extinction(noun, geohistory, extinction, oligocene) |
| extant thanetian first appearance(noun, creature, geohistory, thanetian) |
| paleocene extinction(noun, fauna, extinction, oligocene) |