This ammonite shows some slight crushing, which is not uncommon for fossils preserved in the Green Ammonite Beds. Its narrow, streamlined profile may have made it one of the fastest-swimming ammonites. They moved by sucking water through the mouth, pumping it over the gills, then squirting it out again. This propelled the animal through the water – backwards!
Find out more about ammonites on the molluscs pages.