Paleontology and Geology of the Chanares and Ischigulasto Formations (Middle/Upper Triassic, Argentina)

查纳雷斯和伊斯奇古拉斯托地层的古生物学和地质学（中/上三叠世，阿根廷）

• 批准号: 9304896
• 负责人: Paul Sereno
• 金额: $ 3.5万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-08-01 至 1995-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9304896&HistoricalAwards=false
• 关键词: Paleontology; Geology; Chanares; Ischigulasto; Formations

9304896 Sereno By the end of the Triassic Period, a major transition in terrestrial vertebrate communities had occurred with the replacement of therapsid-dominated faunas by dinosaur-dominated faunas that would persist until the end of the Mesozoic. Fossiliferous deposits in northwestern Argentina provide a unique opportunity to study this faunal transition at a fine stratigraphic scale within a radiometrically dated framework. In this study PI will oversee preparation of the complete skeleton of the important new early dinosaur, Eoraptor lunensis, and also generate more radiometric dates of the enclosing strata of this dinosaur. This work will shed light on an important point in tetrapod evolution.

9304896 Sereno到三叠纪末期，陆生脊椎动物群落发生了重大转变，以兽目动物为主的动物群被以恐龙为主的动物群取代，这种转变一直持续到中生代末期。阿根廷西北部的化石沉积物提供了一个独特的机会，可以在一个精细的地层尺度上研究这种动物过渡。在这项研究中，PI将监督重要的新早期恐龙——龙盗龙（Eoraptor lunensis）的完整骨架的准备工作，并对这种恐龙的外壳地层进行更多的辐射测定。这项工作将阐明四足动物进化的一个重要问题。