This is an informational tour in which students gain a basic understanding of geologic time, the evidence for events in Earth’s history, relative and absolute dating techniques, and the significance of the Geologic Time Scale.
They are found in Europe somewhat later, from about 1 mya (0.7mya for Britain).
The Oldowan is the archaeological term used to refer to the stone tool industry that was used by hominids during the earliest Palaeolithic period.
For a long time it was thought that the Oldowan was the earliest stone tool industry in prehistory, from 2.6 million years ago up until 1.7 million years ago.
Also, most Precambrian successions have been metamorphosed, rendering original minerals and textures difficult to interpret, and resetting diagenetic minerals.
Their oval and pear-shaped hand axes have been found over a wide area. Although it developed in Africa, the industry is named after the type site of Saint-Acheul, now a suburb of Amiens in northern France where some of the first examples were found in the 19th century.
John Frere was the first to suggest in writing a very ancient date for Acheulean hand-axes.
It is not known for sure which species actually created and used Oldowan tools. Early Homo erectus appears to inherit Oldowan technology and refines it into the Acheulean industry beginning 1.7 million years ago.
It reached its peak with early species of Homo such as H. Acheulean is the industry of stone tool manufacture by early humans of the Lower Palaeolithic era in Africa and much of West Asia and Europe.