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Origins and Evolution of Hominoids in East Asia.

东亚类人猿的起源和进化。

基本信息

批准号：
09041161
负责人：
SHIGEHARA Nobuo
金额：
$ 10.5万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A).
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09041161/
关键词：
anthropoids hominoids evolution Eocene Miocene Myanmar Thailand 新猿類新新世ボンダウン Lufengpithecus 後期中新世雲南省

项目摘要

The paleontological investigations have been carried out at four localities in several East Asian countries : the late Miocene of Yunnan Province in southern China, the lete middle Eocene of Pondaung area in central Myanmar, the middle to late Miocene of Ban Na Sai area in Northern Thailand, the early Cenozoic of Fuxing area of Liaoning Province in northeast China. As a result, several primate fossils were discovered in the Pondaung, Myanmar, and Ban Na Sai, Thailand. These fossils are now in the process of description.In Pondaung area newmaxillary and dental specimens of Pondaungia and Amphipithecus, both ofwhich have been discovered at the beginning of this century and considered possible earliest anthropoids, were collected. Especially, the maxillary fragments of both taxa were discovered for the first time. Moreover, two new small primates were discovered : Bahinia and unnamed species. Both taxon are also regarded as anthropoid primates.In Ba Na Sai area a possible hominoid isolated tooth was discovered from the middle Miocene sediment. The specimen is an isolated right upper molar, and might be an oldest hominoid fossil in East Asia. The detailed analysis of this tooth will provide new contribution to the study of hominoid evolution in East Asia.The discoveries of these new primate fossils in Southeast Asia will throw light on the study of evolution of Tertiary primates in East Asia.

在东亚几个国家的4个地点进行了古生物研究：位于中国南部的云南晚中新世、位于缅甸中部的蓬当地区中始新世、位于泰国北部班那赛地区的中、晚中新世、位于中国东北部的辽宁复兴地区早新生代。结果，在缅甸的蓬当和泰国的班纳赛发现了几个灵长类化石。这些化石目前正在描述中。在庞东地区新发现的Pondaungia和Amphipithecus的上颌骨和牙齿标本，都是在本世纪初发现的，被认为是可能是最早的类人猿。特别是这两个类群的上颌骨碎片均为首次发现。此外，还发现了两种新的小型灵长类动物：巴辛亚和未命名物种。这两个分类单元也被认为是类人灵长类，在巴纳赛地区中中新世沉积中发现了一颗可能的类人孤立牙齿。该标本是一颗孤立的右上磨牙，可能是东亚最古老的类人猿化石。这颗牙齿的详细分析将为东亚人类进化的研究提供新的贡献。东南亚这些新的灵长类化石的发现将为东亚第三纪灵长类进化的研究提供线索。