(Table 5) Distribution of calcareous nannofossils in the Paleocene of ODP Hole 113-690C@en

Relative individual species abundance: V = very abundant (>10 specimens/field of view). A = abundant (1-10 specimens/field ov view), C = common (1 specimen/2-10 fields of view), F = few (1 specimen/11-100 fields of view), R = rare (1 specimen/101-1000 fields of view), P = present (only 1 specimen observed/slide). Reworked specimens are denoted by lower case letter. In Sample 113-690C-15X-4, 43-44 cm, specimens of Biantholithus sparsus, denoted by a lower case letter, are interpreted to have been displaced downward by bioturbation.物种个体相对丰度分级规则如下：V为极丰富（very abundant，每视野内标本数＞10）；A为丰富（abundant，每视野内1~10个标本）；C为常见（common，每2~10个视野见1个标本）；F为稀少（few，每11~100个视野见1个标本）；R为罕见（rare，每101~1000个视野见1个标本）；P为存在（present，单张显微玻片仅观测到1个标本）。再沉积标本（reworked specimens）以小写字母标注。在编号为113-690C-15X-4、层位为43~44 cm的样品中，以小写字母标注的稀疏钙盘石（Biantholithus sparsus）标本被推断为因生物扰动（bioturbation）作用发生了向下位移。