Macrofossil Biostratigraphy at Four Cretaceous-Tertiary Boundary Sections, Western Europe

本次研究将对位于西班牙和法国的马斯特里赫特时代的四个保存完好的地层剖面进行生物地层学研究，并对菊石、双壳类和棘足类的灭绝模式进行研究。标本将从地层学上收集。还将收集用于微化石处理的大量样品，以及来自大多数化石层的定向岩心。这些收集的结果将允许测试关于这些剖面中大化石灭绝的时间和模式的假设。通过整合新的宏观化石产状信息、定向岩心样品的磁地层学新信息以及先前发表的微化石信息，将提出一种精细的生物地层学。

The proposed research will examine the biostratigraphy and extinction patterns of ammonites, inoceramid bivalves, and echinoids at four well preserved stratigraphic sections of Maastrichtian age located in Spain and France. Specimens will be collected stratigraphically. Bulk samples to be processed for microfossils will also be collected, as will oriented cores from most fossiliferous horizons. THe results of these collections will allow testing of hypotheses concerning the timing and pattern of macrofossil extinctions in these sections. A refined biostratigraphy will also be proposed, by integrating information from new macrofossil occurrences, new information about magnetostratigraphy derived from the oriented core samples, and previously published microfossil information.