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甘肃泾川人类头盖骨化石发现于1976年,1984年进行了简要报道.但缺少遗址的同位素年代,对头骨形态及演化特点的观察研究也很初步.为进一步发掘泾川头骨蕴含的科学信息,2006年对人化石发现地点进行了地层考察、年代测定,并开展对人化石的进一步研究.本项研究采用光释光法对泾川人化石出土地点进行了年代测定,分别获得15,48,7.9ka的结果.综合地层考察、伴生动物化石、石制品研究,测年结果中15～48ka可能更加接近泾川人化石的真实年代.人化石研究显示,所比较的头骨大多性状在更新世晚期人类与现代人间无明显差异,所以泾川头骨与现代人接近的形态特征并不与其较早的年代相矛盾.同时,对更新世晚期人类头骨测量数据的主成分分析显示泾川头骨分布位置偏离现代人主要分布区域,除说明更新世晚期人类头骨测量性状变异范围较大外,可能提示泾川头骨有一定的原始性.
Gansu Jingchuan human skull fossil was discovered in 1976 and briefly reported in 1984. However, the lack of ruins of the isotope of skull morphology and evolution of the observed characteristics of the study is also very preliminary.In order to further explore the Jingchu skull contains scientific information, 2006 Years of human fossils found stratigraphic sites, dating, and to carry out further research on human fossil.In this study, the light-induced light method of Jingchuan human fossils unearthed at the dating, respectively, obtained 15,48,7.9 ka results.Comprehensive stratigraphic investigation, associated animal fossils, stone products, dating between 15 ~ 48ka may be closer to the true age of the Jingchuan human fossils.Human fossils research shows that most of the skulls compared in the late Pleistocene human And there is no obvious difference between modern skull and Jingchuan skull, so the morphological characteristics of Jingchuan skull and modern people are not contradictory to their earlier age.At the same time, the principal component analysis of the skull measured data of late Pleistocene show that the distribution of Jingchuan skull deviates from the modern The main distribution area of human beings, in addition to indicating that the human skulls in the Late Pleistocene have a large range of variation in measured traits, it may suggest that there is a A certain degree of originality.