| Agroecomyrmecinae(noun, creature, geohistory, lutetian) |
| Albatross(noun, creature, appearance, eocene, geogistory) |
| Aldrovanda(noun, creature, geohistory, paleocene) |
| Alligator(noun, creature, appearance, eocene, geogistory) |
| Alligatorinae(noun, creature, geohistory, paleocene) |
| Amblyoponinae(noun, creature, geohistory, lutetian) |
| Ameiurus(noun, creature, appearance, eocene, geogistory) |
| Ampullinopsis(noun, creature, geohistory, paleocene) |
| Andrias(noun, creature, geohistory, paleocene) |
| Anguillidae(noun, creature, geohistory, paleocene) |
| Aplodontiidae(noun, creature, appearance, eocene, geogistory) |
| Apodiformes(noun, creature, geohistory, paleocene) |
| Astraea(noun, creature, geohistory, paleocene) |
| Atlantogenata(noun, creature, geohistory, paleocene) |
| Australidelphia(noun, creature, geohistory, paleocene) |
| Bat(noun, creature, geohistory, ypresian) |
| Bathytoma(noun, creature, geohistory, paleocene) |
| Boidae(noun, creature, geohistory, paleocene) |
| Boinae(noun, creature, geohistory, paleocene) |
| Bonefishes(noun, creature, geohistory, paleocene) |