Collaborative Research: India at the Crossroads--Biotic Change in Continental Vertebrates Across the Cretaceous-Paleogene

合作研究：处于十字路口的印度——白垩纪-古近纪大陆脊椎动物的生物变化

• 批准号: 1736787
• 负责人: Gregory Wilson Mantilla
• 金额: $ 20.02万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-01 至 2023-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1736787&HistoricalAwards=false
• 关键词: Collaborative; Research; India; Crossroads; Biotic

The end of the Cretaceous Period (66 million years ago) is marked by a mass extinction event that led to the demise of many organisms on land and sea, including non-avian dinosaurs, and fostered the diversification of others, such as modern mammals. At the time of this event, the Indian Subcontinent was in the midst of geographic and geological upheaval. As it migrated northward across the equator, it passed over a volcanic hot spot that breached the crust and led to massive outpouring of basalt lava onto the continent forming the Deccan Traps. The effects of these events on India's land biota remain poorly understood due to understudy of India's geological and paleontological record during this time. The goals of this project are to improve understanding of (1) the timing and nature of Deccan volcanism and (2) its biological effects in continental organisms. Improved understanding of the biotic response to major geographic and geologic changes in India will allow comparisons with the record in North America and will inform studies of the interchange of organisms that resulted from India's subsequent collision with Asia.This project brings together expertise in paleontology and Deccan Trap volcanology, geophysics, geochronology, sedimentology and stratigraphy of Trap-associated deposits. Traditional geological and paleontological techniques will be employed, as well as state-of-the-art radioisotopic dating, chemical fingerprinting, and study of magnetism preserved in basalts that are associated with key fossil beds. Research conducted as part of this project will be incorporated into Immersive Virtual Field Trips (iVFTs), which are cyber-learning applications that allow teachers to virtually take students to scientifically significant but inaccessible environments. iVFTs use location-based high-resolution spherical content, 360° panoramic video, giga-pixel imagery, and unique viewpoints via unmanned aerial vehicles (drones) to develop interactive, content-rich, and learner-driven virtual field explorations, experienced online via HTML5.

白垩纪时期的结束（6600万年前）的特征是质量延伸事件，导致许多生物在陆地和海洋上（包括非阿奇恐龙）的灭亡，并促进了其他人的多样化，例如现代哺乳动物。在这次活动时，印度次大陆处于地理和地质动荡之中。当它向北迁移到方程式上时，它经过了一个火山热点，该火山热点违反了外壳，并导致大量玄武岩熔岩涌向连续形成Deccan陷阱的连续。由于了解印度在这段时间内对印度的地质和古生物学记录的理解，这些事件对印度陆地生物群落的影响仍然很糟糕。该项目的目标是提高对（1）Deccan火山主义的时机和性质的理解，以及（2）其在连续组织中的生物学效应。 Improved understanding of the biotic response to major geographic and geologic changes in India will allow comparisons with the record in North America and will inform studies of the interchange of organisms that resulted from India's subsequent collision with Asia.This project brings together expertise in paleontology and Deccan Trap volcanology, geophysics, geochronology, sedimentology and stratiography of Trap-associated deposits.将采用传统的地质和古生物学技术，以及最先进的放射性分析，化学指纹识别以及与关键化石床相关的玄武岩中保存的磁性研究。作为该项目的一部分进行的研究将被纳入身临其境的虚拟实地考察（IVFT）中，该旅行是网络学习应用程序，使教师几乎可以将学生带到科学意义但无法访问的环境。 IVFTS使用基于位置的高分辨率球形内容，360°全景视频，GIGA像素图像以及通过无人机（无人机）的独特观点来开发通过HTML5在线在线体验的交互式，内容丰富和学习者驱动的虚拟现场探索。

项目成果

New mammals from the Naskal intertrappean site and the age of India’s earliest eutherians

纳斯卡尔陷阱间遗址的新哺乳动物和印度最早的真兽类的时代

• DOI: 10.1016/j.palaeo.2022.110857
• 发表时间: 2022
• 期刊: Palaeoecology
• 作者: Wilson Mantilla, Gregory P.;Renne, Paul R.;Samant, Bandana;Mohabey, Dhananjay M.;Dhobale, Anup;Tholt, Andrew J.;Tobin, Thomas S.;Widdowson, Mike;Anantharaman, S.;Dassarma, Dilip Chandra
• 通讯作者: Dassarma, Dilip Chandra

First rhynchocephalian (Reptilia, Lepidosauria) from the Cretaceous–Paleogene of India

印度白垩纪古近纪第一个喙头类动物（爬行类、鳞龙类）

• DOI: 10.1080/02724634.2022.2118059
• 发表时间: 2022
• 期刊: Journal of Vertebrate Paleontology
• 影响因子: 1.4
• 作者: Anantharaman, S.;DeMar, David G.;Sivakumar, R.;Dassarma, Dilip Chandra;Wilson Mantilla, Gregory P.;Wilson Mantilla, Jeffrey A.
• 通讯作者: Wilson Mantilla, Jeffrey A.