Coralline crag.

Coralline crag.

This specimen of Coralline crag was collected from Thorpeness beach, on the Suffolk coast. The occasion was in September 2021, on a field trip led by Tim Holt Wilson, who's comprehensive guide to the geology of the Suffolk coast, I have included in the photograph. Coralline crag is a sandy fossiliferous marine limestone, which is not exposed at this location. Pieces of this rock are washed up on the beach from an offshore formation. A thorough search of the beach will provide specimens with more obvious pieces of bryozoan fossils.