This specimen looks remarkably like the Middle Chalk Gibbithyris semiglobosa, as shown in the lower photo. The name brachiopod comes from the Greek words ‘brachio’ and ‘poda’, meaning ‘arm’ and ‘foot’. The arm is a hard structure inside the shell that supports an organ covered in fine hairs. These hairs filter the water to find food. The foot is a fleshy stalk that attaches it to the sea floor.
Find out more on the brachiopods page.