Fossiliferous Limestone

Fossiliferous limestone is a sedimentary rock composed primarily of calcium carbonate (CaCO3) in the form of the mineral calcite. It is characterized by the presence of visible fossils, which are the preserved remains or traces of ancient organisms. The fossils can include shells, bones, teeth, and other skeletal fragments of marine animals, as well as plant remains. The rock's appearance varies depending on the types and abundance of fossils, the grain size of the calcite, and the presence of other minerals. It is formed through the accumulation and lithification of the skeletal remains of marine organisms, often in shallow marine environments.