1. This study notes that no reliable Late Oligocene to Miocene nannofossil markers were found in these 2 crusts. Furthermore, sedimentation hiatus was observed.
研究注意到在2个结壳中都没有发现可信的晚渐新世到中新世的化石记录，在个别层位之间存在着沉积间断。
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2. This study notes that no reliable Late Oligocene to Miocene nannofossil markers were found in these 2 crusts. Furthermore, sedimentation hiatus was observed.
