RUI: Pattern of Extinction and Replacement at the Lower- Middle Cambrian Boundary Event in the Great Basin, Western U.S.

RUI：美国西部大盆地中下寒武统边界事件的灭绝和更替模式

• 批准号: 9218892
• 负责人: Linda McCollum
• 金额: $ 4.93万
• 依托单位: Eastern Washington University
• 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: 1993-03-01 至 1995-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9218892&HistoricalAwards=false
• 关键词: RUI; Pattern; Extinction; Replacement; Lower

Extinction, which may be the ultimate fate of all species, has always held a special interest for geologists and biologists, and even legislators (e.g., Endangered Species Act). Extinction events, when a number of species become extinct over a geologically short period time, have always had historical significance to Earth scientists and evolutionary biologists, as they are conveniently used to divide up geologic time. In this project, PI and students will examine in detail one of the earliest extinction events, at the Lower-Middle Cambrian boundary, and help answer questions such as how sudden the event really was, what percentage of the fauna went extinct, and whether species began to decline in numbers prior to their extinction. The paleoenvironment in which these early taxa lived will also be reconstructed from the type of rock that now entombs them.

灭绝，这可能是所有人的最终命运 物种，一直保持着地质学家的特殊兴趣 生物学家，甚至立法者（例如，濒危 物种法）。 灭绝事件，当一些物种 在地质学上很短的时间内灭绝， 对地球科学家来说具有历史意义 进化生物学家，因为他们习惯于 划分地质年代 在这个项目中，PI和学生 将详细研究最早的灭绝之一 事件，在下-中寒武纪边界，并帮助 回答一些问题，比如事件到底有多突然， 有多少动物灭绝了， 物种数量开始下降之前， 灭绝 这些早期生物群所处的古环境 也将从这种岩石中重建， 现在埋葬他们。