Abstract

The article analyzes the author’s own data on the species composition of planktonic foraminifera tests from Upper Cretaceous sediments in the Indian Ocean, as well as from sections of the marginal shelf seas of Australia. Planktonic foraminifera species are grouped and arranged into a climate series. Analysis of the change in the systematic composition of foraminifera made it possible to identify periods of extreme and intermediate climatic conditions in the Late Cretaceous.

中文翻译：

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印度洋南部浮游有孔虫白垩纪晚期生物群发育的关键边界

摘要

本文分析了作者自己的数据，这些数据来自印度洋上白垩统沉积物以及澳大利亚边缘陆架海段的浮游有孔虫测试的物种组成。浮游有孔虫物种被分组并排列成一个气候系列。通过对有孔虫系统组成的变化进行分析，可以确定白垩纪晚期的极端和中等气候条件时期。