image: Virtual reconstructions of the Xuchang 1 and 2 human crania, superimposed on the archeological site where they were discovered. This material relates to a paper that appeared in the 3 March, issue of <i>Science</i>, published by AAAS. The paper, by Z.-Y. Li at Chinese Academy of Sciences in Beijing, China, and colleagues was titled, "Late Pleistocene archaic human crania from Xuchang, China."
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Credit: Xiujie Wu
在华中地区出土了2个人类颅骨对人类演化的一个知之甚少的领域提供了新的线索,即有关欧亚大陆东部现代人类直接先祖的生物学。据Zhan-Yang Li和同事报道,这些年代在10万年前左右的颅骨遗骸反映了一组拼嵌的特征,提示在欧亚大陆存在着相互关联的复杂模式。这些特征包括了作为早期现代人特征的大脑容量及适度眉骨,早期欧亚大陆东部地区人的代表性的低宽脑壳,最后,它们还包括了与欧亚大陆西部尼安德特人有关的半规管。作者说,这些特征的集中出现强化了10万年前在欧亚东部区域人群连续性的模式,以及跨越整个欧亚大陆的更为广泛的人群联系。这些拼嵌特征也凸显了人类演化的动态属性,它导致了我们如今所知的现代人的出现。这些颅骨是在中国许昌市灵井遗址处发现的。
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