It's no surprise to find a sea urchin fossilised like this.

They moved in the mud and sediment at the bottom of Warwickshire's Jurassic seas, looking for nourishing particles to eat.

The same sediment later became the rock-solid 'pastry' that preserved creatures like the sea urchin.

The picture shows a sea urchin found at Cross Hands Quarry, near Long Compton.