Small fossil shells preserved in sediment on the seafloor can reconstruct the history of marine ecosystem. (Photo credits: Dr Yuanyuan Hong) (IMAGE)

The University of Hong Kong

Small fossil shells preserved in sediment on the seafloor can reconstruct the history of marine ecosystem. (Photo credits: Dr Yuanyuan Hong)

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Small fossil shells preserved in sediment on the seafloor can reconstruct the history of marine ecosystem. (Photo credits: Dr Yuanyuan Hong)

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The University of Hong Kong

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