Evolutionary Ecology of fossil anthropoid primates in Southeast Asia

东南亚类人灵长类化石的进化生态学

基本信息

  • 批准号:
    406582743
  • 负责人:
  • 金额:
    --
  • 依托单位:
  • 依托单位国家:
    德国
  • 项目类别:
    Research Grants
  • 财政年份:
    2018
  • 资助国家:
    德国
  • 起止时间:
    2017-12-31 至 2022-12-31
  • 项目状态:
    已结题

项目摘要

During the Cenozoic, Myanmar has been a key area for mammalian evolution, this region having seen the emergence and diversification of some of the major groups of eutherian mammals such as anthropoid primates as well as ruminant and hippopotamoid certartiodactyls. While a very rich mammalian diversity has been described from this region, very few studies have focused on paleoecological and paleoenvironmental aspects related to these mammalian communities. Thus, our project aims at characterizing the paleoecology and paleoenvironments of the Cenozoic faunas of Myanmar by using jointly approaches of isotope biogeochemistry (C, O) and 3D dental microwear texture analyses on mammalian taxa. We will focus on the world-famous primate-bearing faunas of the Pondaung and Irrawaddy Formations. They offer the best potential owing to their rich mammalian fossil record and the most challenging questions regarding the evolution of primates in the Central Basin of Myanmar during the Cenozoic in connection with environmental changes.The Pondaung Formation has yielded several fossiliferous localities dated from the late Middle Eocene (ca. 40-37 Ma), which delivered more than 50 mammalian species including creodonts, primates, cetartiodactyls, perissodactyls and rodents. Most emblematic are the anthropoid primates, the ruminants and the anthracothere cetartiodactyls, which early evolution is documented in Pondaung. Recent studies have proposed that the Pondaung mammalian communities evolved in a seasonal wetlands landscape under a seasonal climate perhaps representing the earliest evidence of the Asian monsoon. Our study on the Pondaung mammals will allow:- to characterize the environments of the Pondaung primates and test the hypothesis of seasonal wetlands- to analyze the ecological structure of the fauna and especially characterize the niche-partitioning among Pondaung mostly dentally poorly-specialized herbivores- to further characterize the alleged climate seasonality so far documented on a single mammal species- to evaluate if environmental and climatic seasonality has impacted specific groups among the Pondaung community.The Miocene to Pleistocene Irrawaddy Formation has yielded a rich and diverse mammal fauna (proboscidea, rhinocerotids, giraffids, bovids...) but has only recently delivered a fauna comprising the hominoid primate Khoratpithecus, a Pongo-related fossil, from the Early Late Miocene. We will study this unique fauna in order to:- reconstruct the paleoenvironements in which Khoratpithecus evolved by the study if its associated fauna- test the putative presence of C4 plants in the early late Miocene of Myanmar.- investigate the niche-partitioning between the diversified herbivores of the fauna- compare the environments of Myanmar Khoratpithecus with those of other closely related Asian hominoids (e.g. Sivapithecus from Pakistan, Khoratpithecus from Thailand).
在新生代,缅甸一直是哺乳动物进化的关键地区,这一地区出现了一些主要的真兽目哺乳动物群体,如灵长类动物以及反刍动物和蝾螈科certartitiodactyls。虽然从这个地区已经描述了非常丰富的哺乳动物多样性,很少有研究集中在古生态和古环境方面与这些哺乳动物群落。因此,我们的项目旨在通过联合使用同位素地球化学(C,O)和3D牙齿微磨损纹理分析哺乳动物类群的方法来表征缅甸新生代动物群的古生态和古环境。我们将集中在世界著名的灵长类动物轴承的庞当和伊洛瓦底江地层。由于其丰富的哺乳动物化石记录和最具挑战性的问题,它们提供了最好的潜力,在新生代期间缅甸中央盆地的灵长类动物的进化与环境变化有关。Pondaung组已经产生了几个产化石的地方,可追溯到中始新世晚期(约100年)。40-37 Ma),产生了50多种哺乳动物物种,包括白垩纪、灵长类、鲸偶蹄类、奇蹄目和啮齿类。最具代表性的是灵长类动物,反刍动物和anthracothere cetartiodactyls,其早期进化记录在Pondaung。最近的研究表明,Pondaung哺乳动物群落在季节性气候下的季节性湿地景观中进化,这可能是亚洲季风最早的证据。我们对庞当哺乳动物的研究将允许:-表征庞当灵长类动物的环境和测试季节性湿地的假设-分析动物群的生态结构,特别是表征庞当大多数牙齿不专业的食草动物之间的生态位划分-进一步表征迄今为止在单一哺乳动物物种上记录的所谓的气候季节性-评估环境和气候季节性是否影响了庞当社区中的特定群体。中新世至更新世伊洛瓦底地层产生了丰富多样的哺乳动物群(长鼻目,犀牛,长颈鹿,牛科.)但直到最近才交付了一个动物群,包括原始人灵长类Khoratpithecus,一个Pongo相关的化石,从早晚中新世。我们将研究这种独特的动物群,以便:-重建Khoratpithecus通过研究进化的古环境,如果其相关的动物群-测试缅甸中新世晚期早期C4植物的假定存在。调查动物群中不同食草动物之间的生态位划分--将缅甸霍拉匹克猿的环境与亚洲其他近缘人科动物(如巴基斯坦的西瓦古猿、泰国的霍拉匹克猿)的环境进行比较。

项目成果

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Professor Dr. Hervé Bocherens其他文献

Professor Dr. Hervé Bocherens的其他文献

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{{ truncateString('Professor Dr. Hervé Bocherens', 18)}}的其他基金

Paleoecology and evolution of the carnivorous mammalian faunas of South America from the Late Miocene to the Pleistocene: insights from stable isotopic signatures (13C, 15N, 18O) in fossil bones and teeth
南美洲从中新世晚期到更新世的食肉哺乳动物区系的古生态和进化:来自骨骼和牙齿化石中稳定同位素特征(13C、15N、18O)的见解
  • 批准号:
    219181464
  • 财政年份:
    2012
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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