| Negaprion(noun, creature, geohistory, eocene, bartonian) |
| Old World silverside(expression, creature, geohistory, eocene, bartonian) |
| Pan-Alcidae(noun, creature, geohistory, eocene, priabonian) |
| Pauropoda(noun, creature, geohistory, eocene, bartonian) |
| Peccary(noun, creature, geohistory, eocene, priabonian) |
| Peripatidae(noun, creature, geohistory, eocene, bartonian) |
| Aceratheriinae(noun, creature, geohistory, oligocene) |
| Actinidia(noun, creature, geohistory, eocene) |
| Adapisoriculidae(noun, creature, geohistory, paleocene) |
| Adeonellidae(noun, creature, geohistory, eocene) |
| Adeonidae(noun, creature, geohistory, eocene) |
| Aegyptopithecus(noun, creature, geohistory, priabonian) |
| Afossochiton(noun, creature, geohistory, oligocene) |
| Ailuridae(noun, creature, geohistory, oligocene) |
| Alagomyidae(noun, creature, geohistory, paleocene) |
| Alectis(noun, creature, geohistory, eocene) |
| Alosa(noun, creature, geohistory, eocene) |
| Amphechinus(noun, creature, geohistory, oligocene) |
| Amphipoda(noun, creature, geohistory, eocene) |
| Amphistegina(noun, creature, geohistory, eocene) |