Modern tools. Stone tool. Evolutionary development of technocomplexes[edit] From the 19th century archaeologists had been turning up prehistoric worked stone tools that appeared to be typologically classifiable into taxa.
They referred to these homotaxial groups of stone tools as industries and named them after the type site; for example, Acheulean after Saint Acheul, and later Oldowan from Olduvai Gorge. In the earlier 20th century they became complexes and technologies; in the later, technocomplexes. Prehistoric tools.