Inland foraminifer fossils are considered as one of good indicators of marine facies.
有孔虫化石群被一些学者视为是海侵或残留海的指相化石。
Inland foraminifer fossils are considered as one of good indicators of marine facies.
有孔虫化石群被一些学者视为是海侵或残留海的指相化石。
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