Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. what type of rock is coquina?

Sedimentary rock

Explanation:

The Coquina rock is a sedimentary rock that is comprised of broken fragments of the shells of ancient trilobites, invertebrates, and brachiopods. When the sediments were deposited, and shells were also added on it, they have undergone compaction and lithification, as a result of which these rocks were formed. They are generally classified as the soft limestone rocks, that are typically formed in the marine and lacustrine environments, where the flow energy is very high.

Thus, Coquina is a sedimentary limestone rock.

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