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When organisms died in a river or stream of some sort, they are covered in a layer of sediment, as time gos by the sediment hardens and is covered by another layer of sediment and so on.

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Which sedimentary rock is formed from the compaction and cementation of the skeletons and shells of sea organisms?

Coquina is a sedimentary rock fitting that description.


What rock is formed from the remains of the living organisms?

sedimentary rock


What kind of sedimentary rock is made from the remains of organisms or fossils?

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