This brachiopod is quite unusual, having two ridges in its pedicle shell (uppermost here) that are separated by a groove. It also has a large pedicle opening, seen at the top of the shell on the right. A fleshy stalk extended through this opening to anchor the shell the seabed. In life, the two shells opened slightly and water was drawn inside the shell and filtered for food.
Find out more on the brachiopods page.