====== Ages of technology ====== The different eras of technological progress are commonly divided as follows, with some general notes on each. The times are in federation time. ====== Paleolithic (2,400,000 B.C.+) ====== 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.