| Eporeodon(noun, creature, geohistory, chattian) |
| Extant Chattian first appearance(expression, geohistory, period, chattian) |
| Extant Rupelian first appearance(expression, geohistory, period, rupelian) |
| Florentiamyidae(noun, creature, geohistory, rupelian) |
| Fungus-growing ants(expression, creature, geohistory, paleocene) |
| Gastornithidae(noun, creature, geohistory, thanetian) |
| Gentilicamelus(noun, creature, geohistory, rupelian) |
| Gryposuchinae(noun, creature, geohistory, chattian) |
| Hemicyoninae(noun, creature, geohistory, chattian) |
| Hymenaea mexicana(expression, creature, geohistory, chattian) |
| Ilariidae(noun, creature, geohistory, chattian) |
| Leptaucheniinae(noun, creature, geohistory, chattian) |
| Leptocyon(noun, creature, geohistory, rupelian) |
| Mammalodontidae(noun, creature, geohistory, chattian) |
| Maximucinus muirheadae(expression, creature, geohistory, rupelian) |
| Megalonychidae(noun, creature, geohistory, rupelian) |
| Megatheriidae(noun, creature, geohistory, rupelian) |
| Merycoides(noun, creature, geohistory, rupelian) |
| Mesocyon(noun, creature, geohistory, rupelian) |
| Mylagaulidae(noun, creature, geohistory, chattian) |