| Archaeonycteridae(noun, creature, geohistory, ypresian) |
| Arctoidea(noun, creature, geohistory, eocene) |
| Argyropelecus(noun, creature, geohistory, eocene) |
| Arsinoitherium(noun, creature, geohistory, priabonian) |
| Astrononion(noun, creature, geohistory, eocene) |
| Barn-owl(noun, creature, geohistory, eocene) |
| Barracuda(noun, creature, geohistory, eocene) |
| Bathyclupea(noun, creature, geohistory, eocene) |
| Bathyclupeidae(noun, creature, geohistory, eocene) |
| Bathygadus(noun, creature, geohistory, eocene) |
| Bathygenys(noun, creature, geohistory, priabonian) |
| Bear(noun, creature, geohistory, eocene) |
| Bipedidae(noun, creature, geohistory, eocene) |
| Bitectiporidae(noun, creature, geohistory, eocene) |
| Bolma(noun, creature, geohistory, eocene) |
| Brachionichthys(noun, creature, geohistory, eocene) |
| Branchipodidae(noun, creature, geohistory, eocene) |
| Bucerotiformes(noun, creature, geohistory, eocene) |
| Bumblebee(noun, creature, geohistory, eocene) |
| Cane rat(expression, creature, geohistory, eocene) |