| Extant Chattian first appearance(expression, geohistory, appearance, period) |
| Acer smileyi(expression, animal, geohistory, appearance) |
| Archaeohippus(noun, animal, geohistory, appearance) |
| Balbaridae(noun, animal, geohistory, appearance) |
| Carcharocles angustidens(expression, animal, geohistory, appearance) |
| Cephalomyidae(noun, animal, geohistory, appearance) |
| Cynarctoides luskensis(expression, animal, geohistory, appearance) |
| Daeodon(noun, animal, geohistory, appearance) |
| Deinotheriidae(noun, animal, geohistory, appearance) |
| Desmostylus(noun, animal, geohistory, appearance) |
| Diceratherium(noun, animal, geohistory, appearance) |
| Diprotodontidae(noun, animal, geohistory, appearance) |
| Enaliarctos(noun, animal, geohistory, appearance) |
| Enhydrocyon basilatus(expression, animal, geohistory, appearance) |
| Eocardiidae(noun, animal, geohistory, appearance) |
| Eomysticetidae(noun, animal, geohistory, appearance) |
| Eporeodon(noun, animal, geohistory, appearance) |
| Gryposuchinae(noun, animal, geohistory, appearance) |
| Hemicyoninae(noun, animal, geohistory, appearance) |
| Hymenaea mexicana(expression, animal, geohistory, appearance) |