Belemnites are common to the east of Lyme in the so called "belemnite marls", a slanting band of rock that begins high in the cliffs near Lyme but form rock ledges at sea level by the time you reach Seatown.

The picture above gives some idea of the diversity of shapes and sizes that belemnites took. The lengths of the specimens in the image vary from 1cm to 10cm. Because of the this huge variety, it is difficult to identify the particular species to which they belong.