| Trichiurus(noun, animal, creature, geohistory, appearance) |
| Tridacninae(noun, animal, creature, geohistory, appearance) |
| Triturus(noun, animal, creature, geohistory, appearance) |
| Trochodendraceae(noun, animal, creature, geohistory, appearance) |
| Tropicbird(noun, animal, creature, geohistory, appearance) |
| Tylopoda(noun, animal, creature, geohistory, appearance) |
| Tyranni(noun, animal, creature, geohistory, appearance) |
| Valenciennellus(noun, animal, creature, geohistory, appearance) |
| Vanessa(noun, animal, creature, geohistory, appearance) |
| Vespinae(noun, animal, creature, geohistory, appearance) |
| bartonian first appearance(noun, creature, geohistory, eocene) |
| billfish |
| eocene first appearance(noun, creature, geohistory, eocene) |
| extant oligocene first appearance(noun, creature, geohistory, eocene) |
| extant paleocene first appearance(noun, creature, geohistory, eocene) |
| extant paleogene first appearance(noun, creature, eocene, geogistory) |
| extant rupelian first appearance(noun, animal, geohistory, appearance) |
| gar |
| lutetian first appearance(noun, creature, geohistory, eocene) |
| pipefish |