GEOLOGY

Detailed explanation-1: -Fossiliferous limestone is any type of limestone, made mostly of calcium carbonate (CaCO3) in the form of the minerals calcite or aragonite, that contains an abundance of fossils or fossil traces. The fossils in these rocks may be of macroscopic or microscopic size.

Detailed explanation-2: -Limestone. Limestone is comprised of calcite and aragonite. It can occur as a chemical sedimentary rock, forming inorganically due to precipitation, but most limestone is biochemical in origin. In fact, limestone is by far the most common biochemical sedimentary rock.

Detailed explanation-3: -Coquina. A biochemical sedimentary rock . Coquina is a biochemical variety of limestone that is composed of shells, fossils, and sand that have been poorly cemented together.

Detailed explanation-4: -What is a fossil? Fossils are the preserved remains of plants and animals whose bodies were buried in sediments, such as sand and mud, under ancient seas, lakes and rivers. Fossils also include any preserved trace of life that is typically more than 10 000 years old.

Detailed explanation-5: -Many limestone layers also contain fossils of such animals as corals, brachiopods, clams, bryozoans, crinoids, and one-celled fusulinids that were preserved whole or nearly whole.