Cretaceous raliolarians from DSDP Leg 89 holes
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Radiolarian faunas from Leg 89 are scarce and poorly preserved. Upper Cretaceous assemblages are reworked. The oldest and lowest assemblage recognized was of the...
第89航次（Leg 89）所获放射虫动物群（Radiolarian faunas）数量稀缺且保存状态极差。晚白垩世放射虫组合均经再沉积改造。目前已识别的最古老且层位最低的组合为……
