广西化石猩猩牙尖釉质的日分泌率  

Daily cuspal enamel secretion rates of fossil orangutans from Guangxi, China

作　　者：胡荣[1] 赵凌霞[2,3] HU Rong;ZHAO Lingxia(Department of Anthropology and Ethnology Xiamen University,Xiamen 361005;Key Laboratory of Vertebrate Evolution and Human Origins,Institute of Vertebrate Paleontology and Paleoanthropology,Chinese Academy of Sciences,Beijing 100044;CAS Center for Excellence in Life and Paleoenvironment,Beijing,100044)

机构地区：[1]厦门大学人类学与民族学系,厦门361005 [2]中国科学院古脊椎动物与古人类研究所,中国科学院脊椎动物演化与人类起源重点实验室,北京100044 [3]中国科学院生物演化与环境卓越创新中心,北京100044

出　　处：《人类学学报》2018年第3期442-451,共10页Acta Anthropologica Sinica

基　　金：中国科学院战略性先导科技专项(B类)(XDB26000000);国家自然科学基金青年项目(41502009)

摘　　要：作为现仅存于亚洲大陆的现生大猿,更新世时期猩猩曾广泛分布于东南亚大陆及华南地区,但其保留下来的化石材料主要为单颗牙齿。从牙齿形态、尺寸等外部特征的研究得出的关于猩猩的分类及演化问题的结论并未得到广泛一致的认同,而研究表明牙齿生长发育特征可作为系统分类研究的一个潜在工具。本研究选取了一批来自于中国广西更新世时期的猩猩牙齿化石,制作牙齿组织学切片,测量计算了其牙釉质日分泌率,结果显示广西化石猩猩牙尖釉质日分泌率在2.32-6.88μm/d之间,平均值约为4.61μm/d,从牙尖内部到表面,釉质日分泌率有增加趋势。此外,还将广西化石猩猩与其他现生大猿和现代人进行比较,以期从牙齿生长发育的角度为猩猩的演化和分类问题提供一点线索和证据。As the only living great ape in Asia, the orangutan was ever widely distributed throughout Southeast Asia and southern China, but preserved fossil materials include mainly isolated teeth. Because of this limited data from external dental characteristics such as shape and size, classification and evolution of orangutans is controversial and not agreed upon by all the scientists. Many studies show that tooth growth and development is a potential tool for taxonomy and phylogeny. In this work, Pleistocene orangutan teeth from Guangxi, were used to create histological slides in order to measure enamel daily secretion rates （DSR）. Our results showed that cuspal enamel daily secretion rates were in the range of 2.32-6.88μm/d, with the average DSR 4.61pm/d. These results were then compared with 0thef living great apes and modem humans, all of which should help in determining orangutan phylogeny and taxonomy.

关 键 词：猩猩 更新世 牙釉质日分泌率 

分 类 号：Q915.86[天文地球—古生物学与地层学] Q983.8[生物学—古生物学]