Zoogeography and paleoecologic distribution of brachiopods from the Late Ordovician to the Middle Silurian

本项目将综合全球晚奥陶世至中志留世腕足类动物地理和古环境分布记录。奥陶-志留纪大规模灭绝事件对动物地理学和古生态学的影响将被追踪，以检验恢复和重组的速度。初步结果表明，腕足动物的广泛分布促进了灭绝期间的生存，这一模式将被更仔细地研究，并将被研究，看看它是否适用于从浅层到深层环境排列的六个古环境带。时间-环境图的构建将允许对腕足动物群体的进化历史和环境分布进行详细的检查。

This project will synthesize the global record of zoogeographic and paleoenvironmental distribution of Late Ordovician to Middle Silurian brachiopods. The effects of the massive Ordovician-Silurian extinction event on zoogeography and paleoecology will be traced in order to examine rates of recovery and reorganization. Preliminary results indicating that wide distribution of brachiopods promoted survival during the extinction will be examined more closely, and the pattern will be examined to see whether or not it holds in each of six paleoenvironmental zones arrayed from shallow to deep environments. Construction of time-environment diagrams will permit detailed examination of the evolutionary history and environmental distribution of brachiopod groups.