Stone Age

broad prehistoric period during which stone was widely used to make implements

thumb|Dolmen at [[Ganghwa Island, South Korea (c. 300 BC)]] thumb|Megalithic Batu Brak, Lampung Province, Indonesia (c. 2100 BC) thumb|Megalithic grave Harhoog in [[Keitum, Sylt, Germany (c. 3000 BC)]]

thumb|upright=1.1|African Pygmies|Central African foragers in the [[Congo Basin in August 2014]] A hunter-gatherer, or forager, is a human living in a community, or according to an ancestrally derived lifestyle, in which most or all food is obtained by foraging, that is, by gathering food from local naturally occurring sources or by hunting game. This is a common practice among most vertebrates that are omnivores. Hunter-gatherer groups, usually a few dozen people, were and are nomadic or semi-nomadic. Hunter-gatherer societies are contrasted with more sedentary agricultural societies, which r

isolated, independent tribes of people

upright=1.35|thumb|A closeup of a shell midden in Santa Cruz Province, Argentina

thumb|upright|Trilithon at Stonehenge

portion of rock removed from an objective piece by percussion or pressure

in archaeology, a stone artifact left over from toolmaking

primitive wooden implement used primarily by subsistence-based cultures to dig out underground food

way that brittle materials break or fracture when they do not follow any natural planes of separation

object that was hafted to weapon that was capable of being thrown or projected

embankment built in the shape of a circle

place in Free State, South Africa

archaeological site that is the model of a particular archaeological culture

type of stone tool

period of technological development