78,000-year-old record of Middle and Later stone age innovation in an East African tropical forest. by Shipton, C, Roberts, P, Archer, W, Armitage, SJ, Bita, C, Blinkhorn, J, Courtney-Mustaphi, C, Crowther, A, Curtis, R, Errico, FD, Douka, K, Faulkner, P, Groucutt, HS, Helm, R, Herries, AIR, Jembe, S, Kourampas, N, Lee-Thorp, J, Marchant, R, Mercader, J, Marti, AP, Prendergast, ME, Rowson, B, Tengeza, A, Tibesasa, R, White, TS, Petraglia, MD, Boivin, N