The benthic extinction event (BEE) and largerforaminifera turnover (LFT) during the Paleocene-Eocene transition constitutes an important step in Paleogene larger-foraminifera evolution.
Following the event, larger benthic foraminifera began to recover with the average rate of 75%.
界线之上开始出现复苏，底栖大有孔虫的平均新生率为75%。
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According to the analysis, PETM event caused seawater temperature rising and environment change during a short time, larger benthic foraminifera cannot fit for it and begin to extinct.