Harifian culture

ICS stages/ages (official)

Greenlandian (11.7*–8.236* ka)

Northgrippian (8.236–4.2† ka)

Meghalayan (4.2 ka–present)

Blytt–Sernander stages/ages

Preboreal (10.3†–9† ka)

Boreal (9–7.5† ka)

Atlantic (7.5–5† ka)

Subboreal (5–2.5† ka)

Subatlantic (2.5 ka–present)

*Relative to year 2000 (b2k).