This well-preserved ammonite shows a large bite mark at the back end of the body chamber. It was almost certainly killed and eaten by a squid or nautilus. This ammonite is a paratype of Bicescomanducator rolli, and is one of the bigger specimens to show a bite mark.
A paratype is an additional specimen that helps to define the variation in the fossil species.
Find out more about ammonites on the molluscs pages.