Timeline of the Ancient Mound Builders
14,000 B.C. |
Paleo-Indian | Earliest known humans in North America |
| 5,000 B.C. | Archaic | Earliest known mound site, |
| 500 B.C. | Early Woodland | Adena Culture |
| 0 | Middle Woodland | Hopewell Culture: |
| 500 A.D. | Late Woodland | Emergent Mississippian Culture |
| 1,100 A.D. | Mississippian | Mississippian Culture |
| 1,650 A.D. | Historic | European contact in the Upper Mississippi Valley |