Relative abundances of benthic foraminifera at the Cretaceous/Paleogene bound...

Uppermost Maastrichtian benthic foraminiferal assemblages (>63 µm) are diverse, indicating mesotrophic conditions in lower bathyal DSDP Hole 465A (Hess Rise, central North...马斯特里赫特阶最上部、粒径大于63微米的底栖有孔虫组合具有较高多样性，指示北大西洋中部赫斯海隆处深海钻探计划（Deep Sea Drilling Project, DSDP）465A钻孔的半深海下部环境为中营养条件。