| Taxaceae(noun, creature, eocene, geogistory) |
| Tenebrio(noun, creature, eocene, geogistory) |
| Tenrec(noun, creature, eocene, geogistory) |
| Thanetian first appearance(expression, geohistory, period, paleocene) |
| Tomistominae(noun, creature, eocene, geogistory) |
| Trachinus(noun, creature, geohistory, oligocene) |
| Trachurus(noun, creature, eocene, geogistory) |
| Treeshrew(noun, creature, eocene, geogistory) |
| Triakis(noun, creature, geohistory, paleocene) |
| Trichiurus(noun, creature, eocene, geogistory) |
| Tridacninae(noun, creature, eocene, geogistory) |
| Triloculinella(noun, creature, geohistory, oligocene) |
| Triturus(noun, creature, eocene, geogistory) |
| Trochodendraceae(noun, creature, eocene, geogistory) |
| Tropicbird(noun, creature, eocene, geogistory) |
| Tsetse fly(expression, creature, geohistory, eocene) |
| Tylopoda(noun, creature, eocene, geogistory) |
| Tyranni(noun, creature, eocene, geogistory) |
| Ungulate(noun, creature, geohistory, paleocene) |
| Valenciennellus(noun, creature, eocene, geogistory) |