He opened a "cannonball" and discovered a thousand-year-old fossil – ElSol.com.ar – Diario de Mendoza, Argentina

Aaron Smith, a 22-year-old British fossil hunter, made an impressive discovery on a Yorkshire beach. The young he found a rock like a cannonball of shiny surface and when he opened it, he discovered the fossil of a marine creature 185 million years old, reported The Daily Mail.

The newspaper says that this type of limestone is abundant on the Yorkshire coastline and that it is covered with iron pyrite.or that gives it its striking appearance. Inside, the enthusiast has found a spiral fossil of a cleviceras, extinct kind of cephalopods having lived in the Jurbadic.

Their fossils are rare because they did not have a hard shell. However, they can be found inside limestone rocks where they are perfectly preserved.