(Table 5) Distribution of late Eocene calcareous nannofossils in ODP Hole 149-900A@en

Species abundance: V = very abundant (> 10 specimens per field of view, A = abundant (1 to 10 specimens per field), C = common (1 specimen per 2 to 10 fields), F = few (1 specimen per 11 to 50 fields), R = rare (1 specimen per 51 to 200 fields), - = not present. Sediment depth is given in mbsf.物种丰度（Species abundance）分级规则如下：V=极丰富（very abundant，单镜下视野内标本量＞10件），A=丰富（abundant，单镜下视野内1~10件标本），C=常见（common，每2~10个镜下视野可见1件标本），F=稀少（few，每11~50个镜下视野可见1件标本），R=罕见（rare，每51~200个镜下视野可见1件标本），符号“-”代表未检出。沉积物深度以海底以下米（meters below seafloor，缩写mbsf）为单位。