 The main importance of these vertebrate subfossil (versus fully fossilized) remains is that they contain organic material, which can be used for radiocarbon dating or the extraction and sequencing of DNA, protein, or other biomolecules.Additionally, isotope ratios can provide information about the ecological conditions under which extinct animals lived.Subfossils are useful for studying the evolutionary history of an environment and can be important to studies in paleoclimatology.