| Bartonian first appearance(expression, geohistory, eocene, period, appearence) |
| Lutetian first appearance(expression, geohistory, eocene, period, appearence) |
| Priabonian first appearance(expression, geohistory, eocene, period, appearence) |
| Ypresian first appearance(expression, geohistory, eocene, period, appearence) |
| Extant Chattian first appearance(expression, appearance, eocene, geogistory, period) |
| Extant Oligocene first appearance(expression, geohistory, appearance, period) |
| Extant Paleocene first appearance(expression, geohistory, appearance, period, paleogene) |
| Extant Rupelian first appearance(expression, appearance, eocene, geogistory, period) |
| eocene first appearance(expression, geohistory, appearance, period) |
| extant paleogene first appearance(expression, geohistory, eocene, period) |
| oligocene first appearance(expression, geohistory, eocene, period, paleogene) |
| paleogene first appearance(expression, eocene, period, appearence) |
| paleocene first appearance(expression, geohistory, eocene, period) |
| Acanthochitona(noun, creature, appearance, eocene, geogistory) |
| Accipitridae(noun, creature, geohistory, ypresian) |
| Accipitriformes(noun, creature, geohistory, lutetian) |
| Aeluroidea(noun, creature, appearance, eocene, geogistory) |
| Aequornithes(noun, creature, geohistory, paleocene) |
| Afroaves(noun, creature, geohistory, paleocene) |
| Afrotheria(noun, creature, geohistory, paleocene) |