| Bartonian first appearance(expression, geohistory, eocene, period) |
| Danian first appearance(expression, geohistory, period, paleocene) |
| Extant Chattian first appearance(expression, geohistory, geogistory, period, oligocene) |
| Extant Eocene first appearance(expression, geohistory, eocene, period, paleogene) |
| Extant Paleocene first appearance(expression, geohistory, period, paleocene, paleogene) |
| Extant Rupelian first appearance(expression, geohistory, geogistory, period, oligocene) |
| Lutetian first appearance(expression, geohistory, eocene, period) |
| Priabonian first appearance(expression, geohistory, eocene, period) |
| Selandian first appearance(expression, geohistory, period, paleocene) |
| Thanetian first appearance(expression, geohistory, period, paleocene) |
| Ypresian first appearance(expression, geohistory, eocene, period) |
| Florentiamyidae(noun, creature, geohistory, eocene, rupelian) |
| Acanthochitona(noun, creature, eocene, geogistory) |
| Acer dettermani(expression, creature, geohistory, eocene) |
| Acer ivanofense(expression, creature, geohistory, eocene) |
| Acer smileyi(expression, creature, geohistory, chattian) |
| Adapidae(noun, creature, geohistory, eocene) |
| Adapiformes(noun, creature, geohistory, eocene) |
| Adapinae(noun, creature, geohistory, eocene) |
| Adapisoriculidae(noun, creature, geohistory, paleocene) |