Found this on a beach in Cresswell, Northumberland, UK. It was contained within a small pebble and I've managed to chip away at the outer sediment layer with my thumb nail. Not sure if the contents are a fossil or a pebble?

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very difficult to say for sure but looks like a simple pebble. Nothing obvious there that looks like a fossil.

This may be a coprolite, or fossil dung. There are sites in Cresswell, especially around Mother Grundy's Parlour, that are well known for their hyena corolites.