Mr Singh told PA he and his son “were surprised” they found the Rugosa coral.
He said: “He found a horn coral, and some smaller pieces next to it, then the next day he went digging again and found a congealed block of sand.
“In that there were loads of little molluscs and sea shells, and something called a crinoid, which is like a tentacle of a squid, so it’s quite a prehistoric thing.”
The Rugosa coral existed in the Paleozoic Era, “between 500 and 251 million years ago” according to Mr Singh
