pebble of Devonian limestone with a fossil of the colonial tabulate coral Thamnopora
A pebble of Devonian limestone with a fossil of a colonial tabulate coral. It was found lying on the floor of Ash Hole 50 years before acquisition - about 1970 - and thought to have got there by natural sedimentary processes. The pebble has rounded edges as a result of erosion and measures 53 mm maximum length and 51 mm maximum width.
BRXHM reference: 8636.1