What Is A Rock With Seashells Called?

What Is A Rock With Seashells Called? Coquina (/koʊˈkiːnə/) is a sedimentary rock that is composed either wholly or almost entirely of the transported, abraded, and mechanically sorted fragments of the shells of mollusks, trilobites, brachiopods, or other invertebrates. The term coquina comes from the Spanish word for “cockle” and “shellfish”. What is a coquina