Hand-built, low-fired, and tempered with grit, shell, or grog.
Prehistoric pottery is hand-built (no wheel marks), fired low (soft, often crumbly), and tempered — the potter mixed in crushed stone, burnt flint, shell, or grog (crushed old pots) to stop cracking. Surfaces run from burnished black to rough corky textures where shell temper has leached out.
Decoration identifies traditions: cord impressions, fingernail and fingertip rustication, incised chevrons, comb stamping. Forms and styles vary by period and region — beakers, urns, carinated bowls — and a decorated rim sherd is worth far more diagnostically than a plain body sherd.
Handle gently: some sherds are soft enough to crumble in a pocket. Record temper visible in the break, wall thickness, surface treatment, and decoration; photograph inner and outer faces. Prehistoric sherds in plough soil often mark truncated pits below — the findspot is the real treasure.
Identifying pottery and ceramics
Identifying terracotta figurines