This water-worn section of Ichthyosaur jaw has been rolling around in the beach system for many years. Preserved in a septarian nodule, it contains multiple teeth and jaw bones which have been naturally ground into cross-section.
Location: Black Ven, Lyme Regis, Dorset, England
Age: Lower Jurassic, Lower Lias - 200 million years old
Measurements: 6cm (length) x 4.8cm (width)
Weight: 81.38g