Clark J D, de Heinzelin J, Schick K D, Hart W K, White T D, WoldeGabriel G, Walter R C, Suwa G, Asfaw B, Vrba E
Department of Anthropology, University of California, Berkeley 94720.
Science. 1994 Jun 24;264(5167):1907-10. doi: 10.1126/science.8009220.
Fossils and artifacts recovered from the middle Awash Valley of Ethiopia's Afar depression sample the Middle Pleistocene transition from Homo erectus to Homo sapiens. Ar/Ar ages, biostratigraphy, and tephrachronology from this area indicate that the Pleistocene Bodo hominid cranium and newer specimens are approximately 0.6 million years old. Only Oldowan chopper and flake assemblages are present in the lower stratigraphic units, but Acheulean bifacial artifacts are consistently prevalent and widespread in directly overlying deposits. This technological transition is related to a shift in sedimentary regime, supporting the hypothesis that Middle Pleistocene Oldowan assemblages represent a behavioral facies of the Acheulean industrial complex.
从埃塞俄比亚阿法尔洼地的中阿瓦什山谷出土的化石和手工艺品，展现了中更新世从直立人到智人的过渡。该地区的氩-氩年代测定、生物地层学和火山灰年代学研究表明，更新世的博多头骨化石和较新的标本大约有60万年的历史。在较低的地层单元中仅发现了奥杜威砍砸器和石片组合，但阿舍利双面手工艺品在上覆的直接沉积物中一直普遍存在且分布广泛。这种技术转变与沉积体系的变化有关，支持了中更新世奥杜威组合代表阿舍利工业复合体行为相的假说。
