Distribution of calcareous nannofossils from IODP Hole 313-M0029A@en

Sediment depth is given in mbsf. Abundance: V = very abundant, A = abundant, C = common, Fr = frequent, F = few, R = rare; B = barren; ? = questionable; * = reworked. Preservation: G = good, M = moderate, P = poor. LO = last occurrence, FO = first occurrence, LcO = last common occurrence.沉积物深度以海底以下米（meters below seafloor，mbsf）为单位。 丰度分级：V = 极丰富（very abundant），A = 丰富（abundant），C = 常见（common），Fr = 频发（frequent），F = 少量（few），R = 稀少（rare）；B = 无生物（barren）；? = 存疑（questionable）；* = 再沉积（reworked）。保存状态分级：G = 良好（good），M = 中等（moderate），P = 较差（poor）。LO = 末次出现（last occurrence），FO = 首次出现（first occurrence），LcO = 末次常见出现（last common occurrence）。