Paleontological Study on the Evolution of Cermpithecine Monkeys in Asia

(1)利用计算机断层扫描仪对塔吉克斯坦南部库尔克赛地区上新世中期发现的PardoricHopithecus头骨标本的内部结构进行了分析，并对其在欧亚大陆(Nishimura，et.)的系统发育地位和扩散途径进行了讨论。Al.，2007；Takai，et.Al.，2008)。此外，我们还对在法国发现的另一个Parapresbytis头骨进行了研究。(2)根据在外拜加尔湖地区上新世中期发现的Parapresbytis化石(Egi等)，讨论了Parapresbytis的系统发育地位。等人，2007年)。(3)对缅甸中部晚中新世至早上新世伊洛瓦底江沉积进行了古生物发掘。今年我们发现了许多哺乳动物化石，包括偶蹄目(Suidae、Bovidae、Cervidae)、Perissodactyla(Equidae、Rhinocerotidae)、鼻目(Mastodontidae、Stegodontidae、Elephantidae)、食肉目(Amphicyonidae、Agritheriidae)和啮齿目(Hystrahidae)。在对这些哺乳动物化石进行古生物学分析的基础上，一名来自缅甸的研究生获得了博士学位。(4)利用CT机对在日本和法国发现的孔雀猴的头骨标本进行了检查，并讨论了它们的系统发育关系。此外，我们还研究了从越南北部板条更新世洞穴沉积物中发现的猕猴头骨的内部结构。我们现在正在准备关于这些结果的描述文件。

(1) We have analyzed the inner structure of the skull specimen of Paradolichopithecus discovered from the middle Pliocene of Kurksay, southern Tajikistan, using Cr (Computer Tomography) machine, and made discussion on its phylogenetic position and dispersal route in Eurasian continent(Nishimura, et. al., 2007 ; Takai, et. al., 2008). In addition, we examined another skulls of Paradolichopithecus discovered in France.(2) We discussed the phylogenetic position of Parapresbytis discovered from the middle Pliocene of Transbaikal area based on the postcranial specimens (Egi, et. al., 2007). We am now preparing the monograph of the Udunga mammal fauna (Middle Pliocene, Transbaikal aea).(3) We made a paleontological excavation at the late Miocene to the early Pliocene Irrawaddy sediments, central Myanmar. This year we discovered many mammal fossils including Artiodactyla (Suidae, Bovidae, Cervidae), Perissodactyla (Equidae, Rhinocerotidae), Proboscidea (Mastodonotidae, Stegodontidae, Elephantidae), Carnivora (Amphicyonidae, Agriotheriidae), and Rodentia (Hystrichidae). A graduate student from Myanmar, obtained the Ph.D. degree based on the paleontological analysis on these mammal fossils.(4)We examined the skull specimens of colobine monkeys discovered in Japan and France, using CT machine, and discussed their phylogenetic relationship. In addition we examined the inner structure of Macaca skull discovered from the lath Pleistocene cave deposits in northern Vietnam. We are now preparing the description papers on these results.