The fossilised shell lay half-buried in the cliff, a silent record of an ancient shore.

Over millions of years, the minerals in the swamp water will gradually fossilise the remains of the ancient plants.

The museum's new exhibit explains how fossilisation preserves delicate plant tissues over millions of years.

As sediment covers the bones, the organic material gradually fossilises, preserving a record of ancient life.

The geologist documented several rare fossilisations that revealed unexpected details about ancient ecosystems.

The sedimentary layers are gradually fossilising the remains of ancient plants in unexpected ways.

Soft tissues are rarely fossilisable unless exceptional chemical conditions preserve them.