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克劳斯这项研究将调查6,500万年前恐龙灭绝后哺乳动物多样化所涉及的生态因素。具体地说，这项拟议的研究的目标是利用牙齿结构来推断古老的有蹄类动物的饮食和觅食生态，这是第一个随着恐龙灭绝而多样化的主要哺乳动物群体。虽然人们认为“髁状突”是现代食草性有蹄哺乳动物--如马、牛和大象--的起源，但“髁状突”本身往往被改造成小型到中型、浣熊状的饮食多面手。通过调查这些灭绝动物的牙齿对食物的适应情况，这项研究将揭示在白垩纪末期大规模灭绝后，可能对恢复和多样化“髁状突”很重要的因素。因此，这项工作对于理解对从生物胁迫中恢复和产生生物多样性至关重要的生态因素是重要的。