U.S. Early Cultures

Paleo ...................................................14,000 - 11,000 B.P.

Late Paleo ............................................12,000 - 10,00 B.P.

Transitional Paleo ..................................11,000-9,000 B.P.

Early Archaic ........................................10,000 - 7,000 B.P.

Middle Archaic ......................................7,000 - 4,000 B.P.

Late Archaic .......................................... 4,000 - 3,000 B.P.

Middle to Eastern Cultures

Woodland ..............................................3,000 - 1,300 B.P.

Mississippian ..........................................1,300 - 400 B.P.

Historic .................................................. 450 - 170 B.P.

Western Cultures

Transitional ..............................................2,300 - 1,600 B.P.

Developmental .........................................1,600 - 700 B.P.

Classic ..................................................... 700 - 400 B.P.

Historic .................................................... 400 - 170 B.P.

     All ages on cultural periods are approximations.  B.P. stands for "Before Present".

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