On the benthonic bathyal-zone foraminifera as stratigraphic guide fossils
On the benthonic bathyal-zone foraminifera as stratigraphic guide fossils
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论底栖深海带有孔虫作为地层引导化石
DOI：
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发表时间：
1980
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通讯作者：
E. Boltovskoy
中科院分区：
文献类型：
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作者：
E. Boltovskoy
对南大西洋、南太平洋和印度洋中半深海带9个DSDP孔的837个新生代沉积样品中的底栖有孔虫进行了研究，结果表明渐新世和第四纪的有孔虫组合几乎都由同一种有孔虫组成。这些物种没有表现出任何重要的形态变化。这意味着第四纪动物群的发育不晚于渐新世。晚新生代底栖有孔虫化石组合共包含400多个分类单元，但其中可作为地层学指导化石的不足5%，甚至有些化石还有所保留。
A study of benthonic foraminifera in 837 samples from the U Cenozoic deposits of 9 DSDP holes located in the middle bathyal zone of the S Atlantic, S Pacific and Indian Oceans revealed that the Oligocene and Quaternary assemblages consist of nearly all the same species. These species do not show any important morphological changes. This means that the Quaternary fauna developed not later than the Oligocene. Late Cenozoic benthonic foraminiferal assemblages contain, in total, more than 400 taxa; however, less than 5% of them can be used as stratigraphic guide fossils and even those with some reservations.