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柳江人头骨是迄今在中国华南地区发现的保存最为完整的更新世晚期人类化石,因颅腔的内面附有坚硬的钙质胶结物,无法获取清晰的颅内模,以往的研究只是停留在头骨的外表面.采用高分辨率CT机对柳江人头骨进行了扫描及三维重建,获取虚拟的柳江人颅内模及脑的形态特征的数据,为其在人类进化上的地位提供新的信息.通过与和县,周口店(ZKD),KNM-WT 15000,Sm 3,Kabwe,Brunn 3,Predmost等化石人类及现代人颅内模的比较,显示柳江脑多数特征与现代人相似,如长而宽的脑型,额叶宽阔饱满,脑较高,顶叶加长;少数特征与现代人不同而似早期人类,如枕叶后突程度较现代人显著、小脑半球较现代人收缩.对虚拟颅内模的测量显示柳江人的颅容量为1567cc,位于晚期智人的变异范围而远大于现代人的平均值.柳江人脑的发育程度与晚更新世晚期人类最接近.
Liujiang human skull is by far the most preserved preserved Pleistocene human fossil in southern China so far. Due to the hard calcareous cement attached to the inner surface of the cranial cavity, the clear skull model can not be obtained. Previous studies only remained in the skull The outer surface.The high resolution CT machine was used to scan and reconstruct the Liujiang human skull to acquire the data of the morphological characteristics of the intracranial model and brain of the Liujiang people and to provide new information for its evolutionary status in human beings Comparisons with fossil human and modern intracranial models in He County, Zhoukoudian (ZKD), KNM-WT 15000, Sm 3, Kabwe, Brunn 3 and Predmost show that most features of Liujiang Brain are similar to those of modern humans, such as long and wide Brain shape, frontal lobe is wide and full, the brain is taller, the parietal lobe is lengthened; a few features are different from the modern ones and are similar to the early humans, such as occipital lobe kyphosis is more significant than the modern people, the cerebellar hemispheres shrink more than modern people. Measurements showed that the Liujiang people’s cranial capacity of 1567cc, located in the range of late Homo sagacity and far greater than the average of modern people.The development of Liujiang human brain closest to late Pleistocene human.