|
| Stage | Substage | Dates |
| Preclassic Stage | Early
Preclassic Preclassic Late Preclassic |
2000/1500
B.C.-600 B.C. 600 B.C.-400 B.C. 400 B.C.-250 A.D. |
| Classic Stage | Early
Classic Late Classic |
250
A.D.-550 A.D 550 A.D.-900 A.D. |
| Postclassic Stage | Early
Postclassic Late Postclassic |
900
A.D.-1250 A.D. 1250 A.D.-1524 A.D. |
SELECT FROM THE FOLLOWING:
2007 Federal Register Notice of Extension
2007 Amended Article II (English) (Spanish)
1997 Federal Register Notice (html) (text)