The different eras of technological progress are commonly divided as follows, with some general notes on each.

The times are in federation time.

Signature Technology: Chipped stone.

Other Technologies: Wood, bone, and leather; domesticated dogs; rafts, canoes, and sleds; string; fire; herbs and crude surgery.

Social Organization: Nomadic bands and tribes; rules for marriage, inheritance, and kinship; oral traditions; shamanism.

War: Tribal war bands with hunting weapons; shields.