Evolutionary Study of the Tertiary Primates in South East Asia

东南亚第三纪灵长类动物的进化研究

• 批准号: 14405019
• 负责人: SHIGEHARA Nobuo
• 金额: $ 8.7万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14405019/
• 关键词: Myanmar; Pondaung; Formation; middle Eocene; primate fossils; Anthropoidea; vertebrate fossils; Fission-track age; 絶対年代; 化石動物相; 東南アジア; 第三紀; タイ

The paleontological excavations were carried at the latest middle Eocene Pondaung Formation (about 37-38 Ma), which is distributed along the west bank of the Chindwin River, Central Myanmar. The main purpose of these investigations is to find the primate fossils, especially of anthropoid primates. Moreover, we have made the geological works at the same area : we made the columnar sections and also found the volcanic ash (tuffaceous layers) at the research area. There have been four genera of primates discovered from the Pondaung Formation : Pondaungia, Amphipithecus, and Myanmarpithecus of the Amphipithecidae, and Bahinia of the Eosimiidae. In addition, we discovered a new species of Eosimias, cf.E.puakkaungensis. Now we are preparing a description paper of an isolated lower molar, which was collected at the Pondaung Formation at Bahin village in 2004 field work.In 2004 and 2005 field seasons, we carried out the preliminary geological research at the outcrops of the Pondaung Formation near Pauk, and found another tuffaceous beds, which contained some zircon minerals. Using the Fission-track method, we obtained about 38 Ma from this zircon minerals, which support the absolute ages obtained from the Pondaung Formation near Bahin village.We have also published several description papers on the mammalian fossils, which were collected from the Pondaung Formation, and also some papers on the paleoenvironment of the Pondaung mammalian fauna.

缅甸中部钦敦河西岸地区始新世中期最晚的Pondaung组（约37-38 Ma）是缅甸中部地区的一个古生物群。这些调查的主要目的是寻找灵长类化石，特别是灵长类的化石。此外，我们在同一地区进行了地质工作：我们制作了柱状剖面，并在研究区发现了火山灰（凝灰质层）。在Pondaung组中发现了四个灵长类属：Pondaungia，Amphipithecus和Myanmarpithecus的Amphipithecidae，以及Eosimiidae的Bahinia。此外，我们还发现了一个新种，即Puakkaungensis。2004年和2005年，我们在Pauk附近的Pondaung组露头进行了初步地质研究，发现了另一个凝灰质层，其中含有锆石矿物。用裂变径迹法测得的锆石年龄约为38 Ma，支持了Bahin村附近Pondaung组的绝对年龄，并发表了几篇关于Pondaung组哺乳动物化石的描述和Pondaung哺乳动物群古环境的研究论文。

项目成果

A new genus and species of hyaenodontid creodont from the Pondaung Formation (Eocene, Myanmar).

庞当组（始新世，缅甸）的鬣齿兽新属和新种。

• 发表时间: 2004
• 期刊: Journal of Vertebrate Paleontology 24(2)
• 作者: Egi;N.;Holroyd;P.A.;Tsubamoto;T.;Shigehara;N.;Takai;M.;Soe Thura Tun;Aye Ko Aung;Aung Naing Soe
• 通讯作者: Aung Naing Soe

Takai, M.: "The Pondaung Primates, Enigmatic "Possible Anthropoids" from the Latest Middle Eocene, Central Myanmar"Anthropoid Origins : New Vision. (in press). (2004)

Takai, M.：“Pondaung 灵长类动物，来自缅甸中部始新世晚期的神秘“可能的类人猿””类人猿起源：新视野。

New specimens of Tetraconodon (Mammalia, Artiodactyla, Suidae) from the Miocene of Myanmar.

来自缅甸中新世的四齿兽（哺乳纲、偶蹄目、猪科）新标本。

• 发表时间: 2005
• 期刊: Paleontological Research 9(3)
• 作者: Tsubamoto;Takehisa;高井正成;Thaung-Htike
• 通讯作者: Thaung-Htike

New speciments of Tetracondon (Mammalia, Artiodactyla, Suidae) from the Miocene of Myanmar.

缅甸中新世四爪兽（哺乳动物、偶蹄目、猪科）的新标本。

• 发表时间: 2005
• 期刊: Paleontological Research 9(3)
• 作者: Tsubamoto;T.;Thaung-Htike
• 通讯作者: Thaung-Htike

Takai, M.: "Endocranial cast and morphology of the olfactory bulb of Amphipithecus mogaungensis (latest middle Eocene of Myanmar)"Primates. 44(2). 137-144 (2003)

Takai, M.：“Amphithecus mogaungensis（缅甸始新世中晚期）的颅内模型和嗅球形态”灵长类动物。