DISSERTATION RESEARCH: Trophic Diversity of Early Paleocene Ungulates (Mammalia, "Condylarthra")

论文研究：古新世早期有蹄类动物（哺乳动物，“Condylarthra”）的营养多样性

• 批准号: 9624939
• 负责人: David Krause
• 金额: $ 0.77万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-04-01 至 1997-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9624939&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Trophic; Diversity; Early

9624939 Krause This study will investigate the ecological factors involved in the diversification of mammals 65 million years ago, after the extinction of dinosaurs. Specifically, the goal of the proposed research is to use tooth structure to infer the diet and feeding ecology of the archaic ungulates, or "condylarths," the first major mammalian group to diversify on the heels of dinosaur extinction. Although "condylarths" are believed to have given rise to the modern, herbivorous hoofed mammals -- e.g., horses, cows, and elephants -- "condylarths" themselves are often reconstructed as small to medium-sized, raccoon-like dietary generalists. By investigating dental adaptations to diet in these extinct animals, this research will uncover factors that may have been important to the recovery and diversification of "condylarths" after the mass extinction at the end of the Cretaceous. Thus, this work is important for understanding the ecological factors critical to recovery from biotic stress and to the generation of biological diversity.

9624939 Krause 这项研究将调查 6500 万年前恐龙灭绝后与哺乳动物多样化有关的生态因素。具体来说，拟议研究的目标是利用牙齿结构来推断古代有蹄类动物（或“髁”）的饮食和摄食生态，这是继恐龙灭绝之后第一个实现多样化的主要哺乳动物群体。尽管“髁节”被认为是现代草食性有蹄哺乳动物（例如马、牛和大象）的起源，但“髁节”本身通常被重建为中小型、类似浣熊的饮食通才。 通过调查这些灭绝动物的牙齿对饮食的适应，这项研究将揭示可能对白垩纪末大规模灭绝后“髁突”的恢复和多样化很重要的因素。 因此，这项工作对于理解对生物胁迫恢复和生物多样性产生至关重要的生态因素非常重要。