A place of plenty
Beautifully preserved ammonites such as these can be picked off the shoreline by Tidmoor Point, near Weymouth. They are from the Oxford Clay which forms the headland. As the cliffs slump down, the small waves that run along the Fleet wash it away to leave the fossils concentrated along the shoreline.
Ammonite shells were divided into chambers. Look closer and you can see the delicate wavy suture lines, formed where the chamber walls met the shell.
Find out more about ammonites on the molluscs pages.