The evolution of anatomically modern humans took place during the Pleistocene. In the beginning of the Pleistocene "Paranthropus" species were still present, as well as early human ancestors, but during the lower Palaeolithic they disappeared, and the only hominin species found in fossilic records is "Homo erectus" for much of the Pleistocene. Acheulean lithics appear along with "Homo erectus", some 1.8 million years ago, replacing the more primitive Oldowan industry used by "A. garhi" and by the earliest species of "Homo".