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 region]
5. Asian
6. East Asian
7. Japanese (culture or style)
8. Japanese Protohistoric

Anotations

Scope note:

Refers to the period and culture in Japan, evident from around 250 CE and characterized by a highly organized aristocratic society, advances in armor and iron weapon technology, prominence of horse-riding warriors, and distinctive large, earthen, keyhole-shaped tumuli or burial mounds that were surrounded by moats.