Flint was the most widely used stone to create tools in the Stone Age. First made around 3.3 million years ago until the end of the Stone Age around 3300 B.C. Flint was easily chiseled into sharp points which were then used as tools such as cutting tools, spearheads, arrowheads, drills, and axes.
Sediment covered organisms protected them from scavenging animals, erosion, and decay, allowing over tens of thousands of years of fossilisation to occur.
Between 23 to 3.6 million years ago, Otodus megalodon (commonly known as megalodon) swam the seas, a species of giant mackerel shark. It's long been extinct, however its fossilised remains have people searching shorelines in the hopes of finding a fossilised megalodon tooth.
Dinosaur teeth have been studied since 1822 when Mary Ann Mantell and her husband Dr Gideon Algernon Mantell discovered an Iguanodon tooth, in Sussex in England.
