Hierarchy classification:

1. top of the aat hierarchies
2. Styles and Periods Facet
3. Styles and Periods (hierarchy name)
4. [styles, periods, and cultures by general era]

Anotations

Scope note:

Periods and cultures between prehistory and history, during which a culture or civilization has not yet developed writing, but other cultures have provided written historical records for this people in a given area.