I was at Brean Down on the Somerset coast of England last week, and found various fossils on the beach there. From what it appears, most of the samples I have are from the black rock limestone of the Carboniferous period, although others are differently coloured. They may come from other parts of the coast via longshore drift, or from a point higher up in the cliff, where there are mudstones and sandstones from the upper Carboniferous.
Some banded samples, although I have the suspicion at least one of them is actually striped flint.
Are these some kind of burrow, or is it coral?
Is this coral? (front and back images)
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