MORPHOLOGICAL AND CHRONOLOGICAL STUDIES ON THE HOMO ERECTUS FROM JAVA.

爪哇直立人的形态学和年代学研究。

基本信息

批准号：
04454034
负责人：
BABA Hisao
金额：
$ 3.39万
依托单位：
NATIONAL SCIENCE MUSEUM
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04454034/
关键词：
HOMO ERECTUS JAVA MORPHOLOGY CHRONOLOGY

项目摘要

A recent study on the Sangiran 17 skull reconstructed by the authors revealed tow morphological features which were regarded as functional adaptations. One is an extraordinal development of the nuchal area, suggesting the presence of thick neck and back muscles. This implies that the individual of Sangiran 17 was at least twice (muscularly) stronger than usual recent humans. The other is a facial structure in regard to the masseter of Sangiran 17 was short, thick and located anteriorly, near to the teeth, which means that the individual of Sangiran 17 should produce a strong chewing force but he could not open the mouth wide. He might have eaten tough vegetables. In regard to the pattern of cusp sizes in the molar tooth crown, the Sangiran series had much closer resemblance to the early African Hominids than to the modern sapiens.An analytical study using inductively coupled plasma (ICP) atomic emission spectrometry and ICP mass spectrometry, has produced minor and trace element data on bone remains of Sangiran. Evaluation of the newly obtained data suggests that several elements as Na and Sr seem promising for discriminating the original statigraphic provenance of the bone specimens from Sangiran, in addition to fluorine which has been previously certified to be an index element for the provenance discrimination. This geographical dating approach based on multielement analyzes was applied to some of the Sangiran hominid remains, and the results have given some implications on the tempo and in evolution of the early Javanese hominids.

作者最近对 Sangiran 17 头骨进行的重建研究揭示了两种被视为功能性适应的形态特征。其一是颈部区域的异常发育，表明存在粗壮的颈部和背部肌肉。这意味着桑吉兰 17 号的个体（肌肉）比一般近代人类至少强两倍。另一个是面部结构，桑吉兰17号的咬肌短而粗，位于前方，靠近牙齿，这意味着桑吉兰17号个体应该产生强大的咀嚼力，但不能张大嘴。他可能吃了坚硬的蔬菜。就臼齿牙冠的尖尖尺寸模式而言，桑吉兰系列与早期非洲原始人类比现代智人更相似。使用电感耦合等离子体 (ICP) 原子发射光谱法和 ICP 质谱法进行的分析研究，产生了桑吉兰骨骸的微量元素和微量元素数据。对新获得的数据的评估表明，除了氟（之前已被证明是来源区分的指标元素）之外，Na 和 Sr 等几种元素似乎有望用于区分桑吉兰骨样本的原始地层来源。这种基于多元素分析的地理测年方法被应用于一些桑吉兰原始人类遗骸，其结果对早期爪哇原始人类的节奏和进化产生了一些影响。