Paleobiology of the First Whales: Radiation of Pakicetid Cetaceans in Eocene Pakistan

第一批鲸鱼的古生物学：始新世巴基斯坦巴基鲸类的辐射

• 批准号: 9902830
• 负责人: Johannes Thewissen
• 金额: $ 24万
• 依托单位: Northeast Ohio Medical University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-08-01 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9902830&HistoricalAwards=false
• 关键词: Paleobiology; First; Whales; Radiation; Pakicetid

9902830ThewissenThe origin of cetaceans was marked by a number of dramatic changes in a whole array of organ systems, and this process is one of the best documented examples of major morphological change in the mammalian fossil record. This grant studies evolutionary changes in the oldest, most basal cetaceans. These whales, pakicetids, and are found only in freshwater deposits of northwestern India and Pakistan. This project will investigate the paleobiology of pakicetids by testing a suite of hypotheses relating to organ system change and its context. Data will be gathered from paleontological, geochemical, and paleomagnetic samples collected in Eocene deposits in northern Pakistan and these data will address questions concerning the phylogeny, locomotion, hearing, habitat, and trophic level of early cetaceans.

9902830鲸类的起源以各种器官系统的许多巨大变化为特征，这一过程是哺乳动物化石记录中主要形态变化的最佳记录例子之一。 该赠款研究最古老的，大多数基底鲸类的进化变化。 这些鲸鱼，帕基切德群，仅在印度西北部和巴基斯坦的淡水沉积物中发现。 该项目将通过测试与器官系统变化及其背景有关的一系列假设来研究pakicetids的古生物学。 数据将从巴基斯坦始新世沉积物中收集的古生物学，地球化学和古磁样品收集，这些数据将解决有关早期鲸鱼早期的系统发育，运动，听力，栖息地和营养水平的问题。