An updated age for the Xujiayao hominin from the Nihewan Basin, North China: Implications for Middle Pleistocene human evolution in East Asia

被引:25
|
作者
Ao, Hong [1 ,2 ]
Liu, Chun-Ru [3 ]
Roberts, Andrew P. [4 ]
Zhang, Peng [1 ]
Xu, Xinwen [5 ]
机构
[1] Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
[2] Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA
[3] China Earthquake Adm, Inst Geol, State Key Lab Earthquake Dynam, Beijing 100029, Peoples R China
[4] Australian Natl Univ, Res Sch Earth Sci, GPO Box 4, Canberra, ACT 2601, Australia
[5] Northwest Univ Xian, Sch Urban & Environm Sci, Xian 710127, Peoples R China
基金
中国国家自然科学基金;
关键词
Magnestostratigraphy; Electron spin resonance dating; China; Archaic Homo sapiens; Neanderthal; Denisovan; HOMO-ERECTUS; PALEOLITHIC SITES; TI CENTERS; ESR; QUARTZ; CAVE; SAPIENS; TEETH; SIMA; SEDIMENTS;
D O I
10.1016/j.jhevol.2017.01.014
中图分类号
Q98 [人类学];
学科分类号
030303 ;
摘要
The Xujiayao site in the Nihewan Basin (North China) is one of the most important Paleolithic sites in East Asia. Twenty Homo fossils, which were previously assigned to an archaic Homo sapiens group, have been excavated along with more than 30,000 lithic artifacts and similar to 5000 mammalian fossil specimens. Dating of the Xujiayao hominin has been pursued since its excavation in the 1970s, but its age has remained controversial because of limitations of the dating techniques that have been applied to available materials. Here, we report new ages for the Xujiayao hominin based on combined electron spin resonance (ESR) dating of quartz in the sediments and high-resolution magnetostratigraphy of the fluvio-lacustrine sequence. The magnetostratigraphy suggests that the upper Matuyama and Brunhes polarity chrons are recorded at Xujiayao. The ESR dating results indicate a pooled average age of 260-370 ka for the Homo-bearing layer, which is consistent with its position within the middle Brunhes normal polarity chron indicated by magnetostratigraphy. This age estimate makes the Xujiayao hominin among the oldest mid-Pleistocene hominins with derived Neanderthal traits in East Asia. This age is consistent with the time when early Denisovans, a sister group of Neanderthals, appeared and colonized eastern Eurasia. Our updated age and the Neanderthal-like traits of the Xujiayao Homo fossils, particularly the Denisovan-like molar teeth, make it possible that the Xujiayao hominin could represent an early Denisovan. (C) 2017 The Author(s). Published by Elsevier Ltd.
引用
收藏
页码:54 / 65
页数:12
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