Fossil hunting: How to find fossils on the beach | Natural History Museum

You Will Not Believe how ocean fossils end up sealed inside solid rock layers. Long ago, sea creatures settled onto the seafloor after death and were quickly covered by clouds of silt and sand from storms and currents. Those layers stacked up like blankets, pressing down and protecting the remains while the sediments slowly hardened into rocks like sandstone and mudstone around them. Shocking fact: some fossil-rich rock layers contain thousands of buried sea organisms from a single ancient event

Fossils | Characteristics, Types & Importance