Collaborative Research: A Chronology and Ecological Context of Primate and Mammalian Evolution

合作研究：灵长类动物和哺乳动物进化的年代学和生态背景

• 批准号: 1945743
• 负责人: Christopher Campisano
• 金额: $ 1.83万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1945743&HistoricalAwards=false
• 关键词: Collaborative; Research; Chronology; Ecological; Context

Primate fossils discovered over the past few hundred years have vastly improved the understanding of primate evolution. However, major questions remain regarding the relationship between local geology and the precise identification of many fossil species. Recently, new fossil primates, including a new ape species, were discovered in Middle Miocene deposits, demonstrating the potential for significant additional finds. In this project, the investigators will reanalyze local geology, search for additional fossils, and reassess previously identified mammal species to develop more precise geological age estimates and advance knowledge about primate and mammalian evolution and environments. The project involves students from underrepresented groups from high school through graduate school, providing them with STEM research opportunities in evolutionary biology, geology, paleontology, and imaging. Furthermore, it will foster research collaborations and training opportunities. Outreach will be provided through various media formats and digitized fossils will be made available to researchers and educators to promote scientific inquiry as part of a virtual laboratory.This project combines paleontological and geological fieldwork with lab-based recovery efforts and isotopic analyses focused on Middle Miocene deposits. The investigators will: (1) recover additional fossils from newly discovered fossil localities; (2) establish a more accurate biochronological and stratigraphic assessment of these localities; and (3) reconstruct the paleoenvironment at these fossil localities to assess how the fauna and paleoecology of the region relate to other well-studied localities. Fossils will be collected through surface surveys and wet sieving of sediments for micromammals in a laboratory setting. A joint faunal identification effort with local faunal experts will allow for a revised, standardized taxonomy and an updated biochronological correlation directly with regional fauna for the first time. Geological survey efforts will concentrate on reinterpretation of the major sandstone stratigraphy with an effort to place the fossil-bearing localities in a firmer relative stratigraphic framework using novel methods in GIS. Paleoenvironmental reconstructions will be conducted via relative faunal abundances and stable isotope analyses on fossil mammal enamel. Finally, regional fossil collections will be digitized using 3D surface scanning and micro-CT imaging, and then made available online to facilitate faunal identifications across researchers and for future scientific study. This project is jointly supported by the Biological Anthropology and Sedimentary Geology & Paleobiology programs.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

在过去的几百年中发现的灵长类化石大大改善了对灵长类动物进化的理解。但是，关于当地地质与许多化石物种的精确鉴定之间关系的主要问题。最近，在中新世中期的沉积物中发现了新的化石灵长类动物，包括新的猿类物种，证明了可能有重大额外发现的潜力。 在该项目中，研究人员将重新分析当地的地质，寻找其他化石，并重新评估先前确定的哺乳动物物种，以开发更精确的地质年龄估计，并提高有关灵长类动物和哺乳动物进化和环境的知识。该项目涉及来自高中到研究生院的代表性不足小组的学生，为他们提供了进化生物学，地质，古生物学和成像的STEM研究机会。 此外，它将促进研究合作和培训机会。将通过各种媒体格式提供外展活动，并将为研究人员和教育者提供数字化的化石，以促进科学探究，作为虚拟实验室的一部分。该项目将古生物学和地质现场工作与基于实验室的恢复工作和同位素分析相结合，而同位素分析的重点是中后期沉积。调查人员将：（1）从新发现的化石地区收回其他化石； （2）对这些地区建立更准确的生物课程和地层评估； （3）在这些化石地区重建古环境，以评估该地区的动物群和古生态学如何与其他研究的地区相关。化石将通过表面调查和在实验室环境中的微米湿筛进行湿筛。与当地动物专家的联合动物识别工作将允许首次与区域动物群直接与区域动物群建立经过修订的，标准化的分类学和更新的生物课程相关性。地质调查工作将集中于重新诠释主要的砂岩地层学，以便将带有化石的地方放置在GIS中新方法的较牢固的相对地层框架中。古环境重建将通过相对的动物丰度和化石哺乳动物牙釉质进行稳定的同位素分析进行​​。最后，将使用3D表面扫描和Micro-CT成像数字化区域化石收集，然后在线提供以促进研究人员跨研究人员和未来科学研究的动物识别。该项目由生物人类学和沉积地质与古生物学计划共同支持。该奖项反映了NSF的法定任务，并且使用基金会的知识分子优点和更广泛的影响审查标准，被认为值得通过评估。

项目成果

New Middle Miocene Ape (Primates: Hylobatidae) from Ramnagar, India fills major gaps in the hominoid fossil record

• DOI: 10.1098/rspb.2020.1655
• 发表时间: 2020-08
• 期刊: Proceedings of the Royal Society B
• 作者: C. C. Gilbert-C.;A. Ortiz;Kelsey D. Pugh;Christopher J. Campisano;B. Patel;N. P. Singh;J. Fleagle;R. Pat

A new genus of treeshrew and other micromammals from the middle Miocene hominoid locality of Ramnagar, Udhampur District, Jammu and Kashmir, India

来自印度查谟和克什米尔乌德汉普尔区拉姆讷格尔中新世人科动物所在地的树鼩和其他微型哺乳动物的新属

• DOI: 10.1017/jpa.2022.41
• 发表时间: 2022
• 期刊: Journal of Paleontology
• 影响因子: 1.4
• 作者: Sehgal, Ramesh Kumar;Singh, Abhishek Pratap;Gilbert, Christopher C.;Patel, Biren A.;Campisano, Christopher J.;Selig, Keegan R.;Patnaik, Rajeev;Singh, Ningthoujam Premjit
• 通讯作者: Singh, Ningthoujam Premjit