Skeletal fossils are the preserved remains of the hard parts of ancient organisms, primarily bones and teeth. These fossils provide valuable information about the structure, size, and shape of extinct species, helping scientists understand their evolution and how they lived. Fossils can be found in various locations, often in sedimentary rock layers. The study of skeletal fossils is a key aspect of paleontology, the science dedicated to understanding past life on Earth. By examining these remains, researchers can reconstruct ancient ecosystems and gain insights into the history of life.