Science. 1974 Nov 15;186(4164):630-2. doi: 10.1126/science.186.4164.630.
Oscillations in the ratio of two principal types of secondary calcification of the test surface in Neogloboquadrina pachyderma populations closely parallel paleoclimatic oscillations over the last 6 million years in a deep-sea core drilled in the temperate South Pacific. The nature of secondary calcification in fossil planktonic foraminifera represents a useful index in interpreting Cenozoic climates.
在南太平洋温带深海岩芯中钻探的过去 600 万年的古气候波动中，在 Neogloboquadrina pachyderma 种群中两种主要次要钙化类型的测试表面的比例波动非常接近。化石浮游有孔虫的次生钙化性质代表了解释新生代气候的有用指标。
