When an organism dies, usually the remains decompose, are eaten by scavengers and, or destroyed by the surrounding environment. However, albeit rarely, an organism can be preserved. Sometimes an organism’s remains are rapidly buried, resulting in minerals seeping into the organic materials (usually the harder tissues, since soft flesh typically decays by this point) and replaces the original parts over time. Most fossils are preserved by this means, with amber being one exception to the rule; the hardened tree sap preserves the original organism. Through this process, one of four types of fossils can result: mold fossils, cast fossils, ichnofossils and true form fossils. Mold fossils are the negative impression left by an organism, while
